| 单词 | nucleic acid |
| 例句 | Viroids are composed exclusively of nucleic acid, unlike the viruses, which also have a protein coat. Cosmos 1980-01-01T00:00:00Z Was it a protein or a nucleic acid or some other kind of molecule? The Gene 2016-06-02T00:00:00Z The nucleic acid in a chromosome, as one biochemist put it, was merely the “structure-determining, supporting substance”—a glorified molecular scaffold for genes. The Gene 2016-06-02T00:00:00Z Mutations also occur because of radioactivity or ultraviolet light from the Sun or cosmic rays or chemicals in the environment, all of which can change the nucleotides or tie the nucleic acids up in knots. Cosmos 1980-01-01T00:00:00Z For why should I get excited learning boring chemical facts as long as the chemists never provided anything incisive about the nucleic acids? Double Helix 1968-02-27T00:00:00Z Since the chemical was acidic, its name was later modified to nucleic acids—but the cellular function of nuclein had remained mysterious. The Gene 2016-06-02T00:00:00Z Pauling’s nucleic acid in a sense was not an acid at all. Double Helix 1968-02-27T00:00:00Z He had been working on the chemistry of nucleic acids in Copenhagen—“a complete flop,” as he would later describe it—but Wilkins’s photograph entranced him. The Gene 2016-06-02T00:00:00Z A vital component of TMV was nucleic acid, and so it was the perfect front to mask my continued interest in DNA. Double Helix 1968-02-27T00:00:00Z The first part betrayed nervousness—it did not come to the point, but conveyed an invitation to participate in a meeting on proteins to which he had decided to add a section on nucleic acids. Double Helix 1968-02-27T00:00:00Z By the early 1920s, biochemists had acquired a deeper understanding of the structure of nucleic acids. The Gene 2016-06-02T00:00:00Z Life is certainly more than the amino acids that make up its proteins and the nucleotides that make up its nucleic acids. Cosmos 1980-01-01T00:00:00Z The tar is an extremely rich collection of complex organic molecules, including the constituent parts of proteins and nucleic acids. Cosmos 1980-01-01T00:00:00Z It might be a microbe, a strand of lost nucleic acid, a molecule of enzyme, or a nameless hairless little being with sharp gray eyes. The Lives of a Cell 1974-01-01T00:00:00Z No organic molecules could be found—no building blocks of proteins and nucleic acids, no simple hydrocarbons, nothing of the stuff of life on Earth. Cosmos 1980-01-01T00:00:00Z Nucleotides have been put together into strands of nucleic acid a few dozen units long. Cosmos 1980-01-01T00:00:00Z It has recently been reported that the nucleic acid of chloroplasts is, in fact, homologous with that of certain photosynthetic microorganisms. The Lives of a Cell 1974-01-01T00:00:00Z Only an extremely limited number of nucleic acid molecules are any good for lifeforms as complicated as we. Cosmos 1980-01-01T00:00:00Z Under the right circumstances in the test tube, short nucleic acids can synthesize identical copies of themselves. Cosmos 1980-01-01T00:00:00Z I was specially interested to hear the talk on nucleic acids to be given by Randall. Double Helix 1968-02-27T00:00:00Z Conceivably, in doing so, he might have come up with a sensational new method which could be extended to the nucleic acids. Double Helix 1968-02-27T00:00:00Z The reason organisms are different is the differences in their nucleic acid instructions. Cosmos 1980-01-01T00:00:00Z There must be ways of putting nucleic acids together that will function far better—by any criterion we choose—than any human being who has ever lived. Cosmos 1980-01-01T00:00:00Z Much of the talk about the three-dimensional structure of proteins and nucleic acids was hot air. Double Helix 1968-02-27T00:00:00Z Chromatin—the biological structure where genes resided—was known to be made of two types of chemicals: proteins and nucleic acids. The Gene 2016-06-02T00:00:00Z Even so, the number of useful ways of putting nucleic acids together is stupefyingly large—probably far greater than the total number of electrons and protons in the universe. Cosmos 1980-01-01T00:00:00Z Most significantly, we both use precisely the same code book for translating nucleic acid information into protein information, as do virtually all the other creatures on the planet.' Cosmos 1980-01-01T00:00:00Z We both use nucleic acids for heredity; we both use proteins as enzymes to control the chemistry of our cells. Cosmos 1980-01-01T00:00:00Z Amino acid compounds, such as glutamate and aspartate as well as substances derived from nucleic acids dissolved in the cells of some algae, especially nori, are a source of umami flavour. A gourmet revival for St. Lawrence River marine algae 2022-09-11T04:00:00Z What's more, when bone marrow samples are collected, the preservation technique can degrade some nucleic acids and proteins within the cells they contain. Researchers chart the contents of human bone marrow 2023-11-14T05:00:00Z To prevent misuse by terrorists, officials have announced stricter guidelines on selling nucleic acids and devices that print genetic material. News at a glance: Big neutrino detectors, pesky Excel formatting, and a crackdown on lead 2023-10-25T04:00:00Z Biologists seeking to synthesize genes commonly order nucleic acids as part of their research on infectious diseases, cell biology, cancer, and myriad other projects. U.S. urges DNA synthesis firms to ramp up screening for biosecurity threats 2023-10-22T04:00:00Z AGEs are metabolic by-products that occur when a sugar combines with part of a protein, lipid or nucleic acid. Can't stop binging on fries and BBQ? 2023-10-16T04:00:00Z A team of researchers from Shinshu University, the National Institute of Advanced Industrial Science and Technology, and the University of Shizuoka in Japan set out to address this question by leveraging nucleic acid aptamers. DNA aptamer finds novel application in regulating cell differentiation 2023-10-10T04:00:00Z But he knew that efforts to repurpose this delicate nucleic acid for medical purposes had hit a host of stumbling blocks. Scientists whose work on mRNA paved the way for first COVID-19 vaccines win Nobel Prize 2023-10-02T04:00:00Z The guidelines also ask companies to incorporate automatic screening in desktop devices that print nucleic acid sequences. News at a glance: Big neutrino detectors, pesky Excel formatting, and a crackdown on lead 2023-10-25T04:00:00Z The goal is to limit the ability of “individuals with ill intent” to use synthetic nucleic acids to construct harmful biological pathogens or toxins. U.S. urges DNA synthesis firms to ramp up screening for biosecurity threats 2023-10-22T04:00:00Z Our new findings suggest that our microbes are likely playing a part in this recycling process by converting large nitrogen-containing molecules like proteins and nucleic acids into ammonium. Your microbes live on after you die. A microbiologist explains how 2023-10-02T04:00:00Z The individual nucleotides, basic units of nucleic acids like DNA and RNA, dictate the bonding between complementary sequences. Strength is in this glass's DNA 2023-09-27T04:00:00Z They watched how other nucleic acids snuck past the immune system unnoticed and devised a fix that allowed mRNA to ferry new work orders into cells without causing flares of inflammation. Scientists whose work on mRNA paved the way for first COVID-19 vaccines win Nobel Prize 2023-10-02T04:00:00Z First, it zeroes in on a virus' characteristic sequence of nucleic acids -- naturally occurring chemical compounds that serve as the primary information-carrying molecules in a cell. Scientists develop method to detect deadly infectious diseases 2023-09-19T04:00:00Z Worried that bioterrorists will take advantage of the growing ease of creating risky pathogens in the lab, federal officials are beefing up guidelines for companies that sell nucleic acids such as DNA and RNA. U.S. urges DNA synthesis firms to ramp up screening for biosecurity threats 2023-10-22T04:00:00Z Software for nucleic acid assembly and synthesis also can be used to build genetic weapons from digital sequence data. Pentagon ill-prepared for bio warfare attacks from adversaries such as China, Russia 2023-08-18T04:00:00Z In particular, the department is targeting China’s attempts to acquire synthetic biology and genomic editing, including software used in nucleic acid assembly and synthesis. U.S. uses sanctions to deny China tools for brain warfare, toxin weapons 2023-07-20T04:00:00Z The proteins, lipids, and nucleic acids are broken down by specific enzymes into smaller molecules and salvaged by the plant to support the growth of other plant tissues. Fundamentals of Biology 2015-01-01T00:00:00Z Next, because it amplifies any nucleic acid sequence found in the sample, it makes many more copies, as many as 10,000. Scientists develop method to detect deadly infectious diseases 2023-09-19T04:00:00Z HHS is also recognizing that companies are now selling desktop devices that allow owners to print desired nucleic acid sequences on demand. U.S. urges DNA synthesis firms to ramp up screening for biosecurity threats 2023-10-22T04:00:00Z Once inside the cell, the viral capsid is degraded and the viral nucleic acid is released, which then becomes available for replication and transcription. Concepts of Biology 2013-04-25T00:00:00Z The same year Genentech went public, Berg received the Nobel Prize in chemistry, sharing it with Walter Gilbert and Frederick Sanger, honored for their research on nucleic acids. Paul Berg, scientific firebrand who pioneered genetic engineering, dies 2023-02-22T05:00:00Z Rather than inducing random changes in the virus’ RNA genome, the drug is more likely to cause specific nucleic acid substitutions, with guanine switching to adenine and cytosine to uracil. Could a popular COVID-19 antiviral supercharge the pandemic? 2023-02-01T05:00:00Z Then, it clumps those thousands of specks of nucleic acids into nanoballs that are "large" enough to be detected. Scientists develop method to detect deadly infectious diseases 2023-09-19T04:00:00Z “The three-month deferral is taking that 33 days and tripling it to be extra sure, extra cautious about this period in the nucleic acid test.” FDA to ease blood donation ban on gay men, allow monogamous to give 2023-01-26T05:00:00Z The nucleic acids can be separated as whole chromosomes or as fragments. Concepts of Biology 2013-04-25T00:00:00Z They're like duffle bags that carry cargo, such as proteins and nucleic acids, from the cell to distant tissues. Chickenpox and shingles virus lying dormant in your neurons can reactivate 2023-01-01T05:00:00Z However, travellers from overseas will still be required to present a negative nucleic acid test certificate for entry, the government said. Macau to drop COVID tests for arriving passengers 2022-12-22T05:00:00Z At the China-Japan Friendship Hospital’s fever clinic in Beijing, a dozen people waited for nucleic acid test results. China reduces COVID-19 case number reporting as virus surges 2022-12-13T05:00:00Z "I'm very happy because previously, I had to do a nucleic acid test nearly every day, so this is more convenient," she said. Chinese consumers wary of splurging after Beijing relaxes COVID strictures 2022-12-11T05:00:00Z The nucleic acids in a gel matrix are invisible until they are stained with a compound that allows them to be seen, such as a dye. Concepts of Biology 2013-04-25T00:00:00Z Entrants do not need to provide a certificate of a negative nucleic acid test, the Beijing News, a newspaper owned by the Chinese Communist Party, said. Beijing Capital Airport drops negative COVID test requirement from Tuesday 2022-12-06T05:00:00Z Rising infections would benefit drugmakers and producers of medical equipment, he said, but he advised against holding shares in makers of nucleic acid tests used by the authorities, as testing requirements ease. Investors bet China's rally on easing COVID curbs will be furious but fleeting 2022-12-05T05:00:00Z Authorities will also step up antigen tests for the new coronavirus and reduce the frequency of mass testing and regular nucleic acid tests, the two sources said. China to allow some positive COVID-19 cases to quarantine at home - sources 2022-12-01T05:00:00Z “Later we shouted, ‘No nucleic acid tests, we want freedom’ and ‘No to health codes,’” she said. After a Deadly Blaze, a Surge of Defiance Against China’s Covid Policies 2022-11-27T05:00:00Z The study of nucleic acids began with the discovery of DNA, progressed to the study of genes and small fragments, and has now exploded to the field of genomics. Concepts of Biology 2013-04-25T00:00:00Z The radiation inflicts photochemical damage that mangles nucleic acids—inactivating pathogenic viruses and bacteria, although not necessarily killing them. These UV Devices Could Keep Indoor Air Free of Viruses 2022-11-22T05:00:00Z It had also been requiring guests to show a negative nucleic acid test, which helps detect viruses and bacteria, up to three days before entering the park and resort grounds, according to NPR. Visitors locked inside Shanghai Disney during indefinite COVID-19 closure 2022-10-31T04:00:00Z Because peptides draw from 20 amino acid building blocks, rather than just the four nucleic acids that make up aptamers, they offer greater chemical diversity and potentially more good drug candidates. ‘Mirror-image’ protein factories could one day make durable drugs the body can’t break down 2022-10-26T04:00:00Z "At the same time, we will continue to carry out a series of work related to epidemic prevention and control, such as deep cleaning, disinfection and nucleic acid testing," it added. China Covid: Universal Resort shuts due to Beijing coronavirus cases 2022-10-26T04:00:00Z Digestive enzymes within the lysosomes aid the breakdown of proteins, polysaccharides, lipids, nucleic acids, and even worn-out organelles. Concepts of Biology 2013-04-25T00:00:00Z The concept of click chemistry has been “transformative” in many areas of chemistry, materials science, biology and medicine, said Tom Brown, professor of nucleic acid chemistry at the University of Oxford. Nobel Prize awarded to three scientists for work in click chemistry, which links molecules quickly 2022-10-05T04:00:00Z Under the new arrangements, locally based air crew can return home after obtaining a negative result of the nucleic acid test conducted at the airport, the statement said. Hong Kong govt scraps quarantine rules for air crew 2022-09-09T04:00:00Z Earlier this week, officials in the city began requiring residents to provide 24-hour Covid nucleic acid tests in order to enter residential compounds and commercial offices, and they shut down public venues and entertainment businesses. China Locks Down Major Southern City of Chengdu 2022-09-01T04:00:00Z Japan requires a nucleic acid amplification test, such as a PCR test, which tends to be less accessible and more expensive than at-home rapid antigen tests. Japan axes covid test for travelers but faces battle to revive tourism 2022-08-24T04:00:00Z Most nucleic acid extraction techniques involve steps to break open the cell, and then the use of enzymatic reactions to destroy all undesired macromolecules. Concepts of Biology 2013-04-25T00:00:00Z Large molecules such as proteins, nucleic acids, and so on—so important to life—are usually electrically charged. College Physics for AP Courses 2015-08-12T00:00:00Z Each of the four types of macromolecules—proteins, lipids, carbohydrates, and nucleic acids—has its own characteristic set of functional groups that contributes greatly to its differing chemical properties and its function in living organisms. Biology for AP Courses 2022-06-09T00:00:00Z This diagram illustrates the way organisms are related by examining one sequence of the nucleic acid RNA that all species have in common. Astronomy 2016-10-13T00:00:00Z For a stained protein or nucleic acid gel, a lithophane can represent the intensities of the stain as variations in relief. 3D printers have become widely available, and the printing only takes minutes. News at a glance: Omicron vaccine, colonial-era exploitation, and mapping health equity 2022-08-17T04:00:00Z A biofilm is a microbial community held together in a gummy-textured matrix, consisting primarily of polysaccharides secreted by the organisms, together with some proteins and nucleic acids. Concepts of Biology 2013-04-25T00:00:00Z The city will require all teachers and students to take nucleic acid tests for the coronavirus every day before leaving campus, according to a statement published by the Shanghai Municipal Education Commission. Shanghai to reopen all schools Sept. 1 with daily COVID testing 2022-08-14T04:00:00Z The simple molecules assembled to form amino acids and nucleic acids. Biology for AP Courses 2022-06-09T00:00:00Z Citizens without a record of a nucleic acid test from within seven days will be assigned a yellow code on Shanghai's health code system, the official notice said. Shanghai extends weekly COVID-19 testing requirement until end of September 2022-08-13T04:00:00Z Two samples of suspected cases of monkeypox go through a process of nucleic acid extraction as they get tested at a microbiology lab at La Paz Hospital in Madrid, Spain, June 1, 2022. Spain confirms first monkeypox-related death in Europe 2022-07-29T04:00:00Z Glucose and other simple sugars, polysaccharides, amino acids, nucleic acids, fatty acids, and derivatives of glycerol are found there too. Concepts of Biology 2013-04-25T00:00:00Z Residents in China's commercial hub Shanghai must take a nucleic acid COVID-19 test at least once a week until the end of August, a local official said on Wednesday. EU drops nearly all of its order for Valneva COVID vaccine 2022-07-20T04:00:00Z The flow of information is similar, but nucleic acids are synthesized as a result of translation in HIV and influenza viruses. Biology for AP Courses 2022-06-09T00:00:00Z The monomer of nucleic acids is a nucleotide. Miller & Levine Biology 2018-01-01T00:00:00Z Phosphorus is used to make nucleic acids and the phospholipids that comprise biological membranes. Environmental Biology 2018-09-06T00:00:00Z Other molecules that would otherwise be used to harvest energy in glycolysis or the citric acid cycle may be removed to form nucleic acids, amino acids, lipids, or other compounds. Concepts of Biology 2013-04-25T00:00:00Z DNA and RNA are nucleic acids that function in protein synthesis. Anatomy and Physiology 2013-06-19T00:00:00Z The nucleic acid fragments that are bound to the surface of the membrane can then be probed with specific radioactively or fluorescently labeled probe sequences. Biology for AP Courses 2022-06-09T00:00:00Z The proteins and nucleic acids assemble into new viruses. Miller & Levine Biology 2018-01-01T00:00:00Z In addition, they may contain oxygen, nitrogen, phosphorus, sulfur, and additional elements.There are four major classes of organic molecules: carbohydrates, lipids, proteins, and nucleic acids. Environmental Biology 2018-09-06T00:00:00Z These same molecules, except nucleic acids, can serve as energy sources for the glucose pathway. Concepts of Biology 2013-04-25T00:00:00Z ROS can cause permanent damage to cellular lipids, proteins, carbohydrates, and nucleic acids. Anatomy and Physiology 2013-06-19T00:00:00Z In samples of meteorites, both amino acids and nucleic acids have been found. Biology for AP Courses 2022-06-09T00:00:00Z The bacterium makes new viral proteins and nucleic acids. Miller & Levine Biology 2018-01-01T00:00:00Z The other type of nucleic acid, RNA, is mostly involved in protein synthesis. Environmental Biology 2018-09-06T00:00:00Z Fossilized nucleic acids—DNA and RNA—yield the most information. Concepts of Biology 2013-04-25T00:00:00Z Inside the nuclear envelope is a gel-like nucleoplasm with solutes that include the building blocks of nucleic acids. Anatomy and Physiology 2013-06-19T00:00:00Z Later, groups of viruses were classified by the type of nucleic acid they contained, DNA or RNA, and whether their nucleic acid was single- or double-stranded. Biology for AP Courses 2022-06-09T00:00:00Z The four major groups of macromolecules found in living things are carbohydrates, lipids, nucleic acids, and proteins. Miller & Levine Biology 2018-01-01T00:00:00Z These three elements are the main components of most organic compounds, such as proteins, lipids, carbohydrates, and nucleic acids. Environmental Biology 2018-09-06T00:00:00Z While most viruses contain a single segment of nucleic acid, others have genomes that consist of several segments. Concepts of Biology 2013-04-25T00:00:00Z During digestion, nucleic acids including DNA and various RNAs are broken down into their constituent nucleotides. Anatomy and Physiology 2013-06-19T00:00:00Z While most viruses contain a single nucleic acid, others have genomes that have several, which are called segments. Biology for AP Courses 2022-06-09T00:00:00Z Two types of nucleic acids are ribonucleic acid, or RNA, and deoxyribonucleic acid, or DNA. Miller & Levine Biology 2018-01-01T00:00:00Z Carbon in these sugars can be re-purposed to create the other types of organic molecules that organisms need, such as lipids, proteins, and nucleic acids. Environmental Biology 2018-09-06T00:00:00Z Unlike animal viruses, the nucleic acid of bacteriophages is injected into the host cell naked, leaving the capsid outside the cell. Concepts of Biology 2013-04-25T00:00:00Z These nucleotides are readily absorbed and transported throughout the body to be used by individual cells during nucleic acid metabolism. Anatomy and Physiology 2013-06-19T00:00:00Z Once inside the cell, the viral capsid is degraded, and the viral nucleic acid is released, which then becomes available for replication and transcription. Biology for AP Courses 2022-06-09T00:00:00Z By using tools that cut, separate, and copy nucleic acids, scientists can now read DNA base sequences. Miller & Levine Biology 2018-01-01T00:00:00Z Carbon is found in all organic molecules, whereas nitrogen is an important component of nucleic acids and proteins. Environmental Biology 2018-09-06T00:00:00Z Ahead of his arrival Thursday, thousands of guests — including top officials, lawmakers and diplomats — checked in to quarantine hotels earlier this week and have been taking daily nucleic acid tests as part of coronavirus precautions. Hong Kong gears up to welcome Xi for handover anniversary 2022-06-29T04:00:00Z Anabolic reactions combine monosaccharides to form polysaccharides, fatty acids to form triglycerides, amino acids to form proteins, and nucleotides to form nucleic acids. Anatomy and Physiology 2013-06-19T00:00:00Z Viruses consist of a nucleic acid core surrounded by a protein capsid with or without an outer lipid envelope. Biology for AP Courses 2022-06-09T00:00:00Z A virus is a nonliving particle made of proteins, nucleic acids, and sometimes lipids. Miller & Levine Biology 2018-01-01T00:00:00Z It is a major component of nucleic acids and phospholipids, and, as calcium phosphate, it makes up the supportive components of our bones. Environmental Biology 2018-09-06T00:00:00Z Journalists covering the events must have daily COVID-19 nucleic acid tests starting last Sunday and must stay in a quarantine hotel beginning Wednesday. Hong Kong bars some journalists from handover anniversary 2022-06-29T04:00:00Z Anabolic reactions build bone, muscle mass, and new proteins, fats, and nucleic acids. Anatomy and Physiology 2013-06-19T00:00:00Z Infected prions cause disease by transmitting nucleic acids to normal prion proteins. Biology for AP Courses 2022-06-09T00:00:00Z Some bacterial viruses cause a lysogenic infection, in which a host cell is not immediately taken over, but instead the viral nucleic acid is inserted into the host cell’s DNA. Miller & Levine Biology 2018-01-01T00:00:00Z Biofungicides encompass a broad category of solutions ranging from live microbes to biological chemistries like proteins and nucleic acids. What Did COVID Teach Us about Preparing for a Plant Pandemic? 2022-06-20T04:00:00Z People leaving Macau must also hold a certificate of negative nucleic acid test results within 24 hours for customs clearance, it said. Macau to begin mass COVID testing on Sunday amid locally transmitted cases 2022-06-19T04:00:00Z Errors in metabolism alter the processing of carbohydrates, lipids, proteins, and nucleic acids, and can result in a number of disease states. Anatomy and Physiology 2013-06-19T00:00:00Z Viruses typically have a simple structure: a protein coat, called the capsid, and a nucleic acid core that contains the genetic material, either DNA or RNA. Biology for AP Courses 2022-06-09T00:00:00Z DNA is a nucleic acid made of nucleotides joined into long strands or chains by covalent bonds. Miller & Levine Biology 2018-01-01T00:00:00Z “We must adhere to the strategy of expanding prevention centered on nucleic acid testing, so as to control the epidemic earlier and faster,” she said Thursday at a news conference. Virus testing the new normal as China sticks to ‘zero-COVID’ 2022-06-09T04:00:00Z “Please be polite and stop slandering nucleic acid tests by splashing dirty water,” Mr. Hu said. China pushes for regular mass testing in its ‘zero Covid’ pursuit. 2022-05-25T04:00:00Z Antigens are generally large proteins, but may include other classes of organic molecules, including carbohydrates, lipids, and nucleic acids. Anatomy and Physiology 2013-06-19T00:00:00Z The bacteriophage infects the host bacterial cell by attaching to its surface, and then it injects its nucleic acids inside the cell. Biology for AP Courses 2022-06-09T00:00:00Z All organisms contain the compounds water, carbohydrates, lipids, nucleic acids, and proteins. Miller & Levine Biology 2018-01-01T00:00:00Z “Please report to your compound or hotel immediately, stay put and wait for the notification of nucleic acid testing.” Beijing closes more venues as anger at Shanghai's COVID lockdown grows 2022-04-29T04:00:00Z Authorities in Sanhe city, which is comprised of Yanjiao and nine other towns, said on Wednesday residents "would be restricted from entering and exiting Beijing" after "an abnormal nucleic acid test" was reported. COVID lockdowns upset the rice bowls of China's commuter workers 2022-04-28T04:00:00Z Phosphate is a normal constituent of nucleic acids; hence, Anatomy and Physiology 2013-06-19T00:00:00Z After an interval of time, the cells are homogenized and different fractions are analyzed for radioactivity content in large nucleic acid molecules. Biology for AP Courses 2022-06-09T00:00:00Z Carbon is a major component of organic compounds, including carbohydrates, lipids, proteins, and nucleic acids. Miller & Levine Biology 2018-01-01T00:00:00Z "This whole April, up to now, we have done 16 nucleic acid tests - this costs a huge amount of taxpayer's money," one Shanghai resident said in a post on the WeChat social media platform. Beijing presses on with mass COVID testing as locked-down Shanghai seethes 2022-04-27T04:00:00Z Only workers who have received two vaccination doses will be allowed to enter the factory, and each will take daily nucleic acid tests for the first three days back. Tesla workers in Shanghai will reportedly sleep and eat in the factory after COVID shutdowns 2022-04-20T04:00:00Z Some residents will be asked to take nucleic acid tests, while the rest will be asked to self-test using antigen tests, city officials said at a news conference. Shanghai to start another round of city-wide COVID tests 2022-04-06T04:00:00Z The nucleic acids can be separated as whole chromosomes or fragments. Biology for AP Courses 2022-06-09T00:00:00Z All organisms require nitrogen to make amino acids and nucleic acids. Miller & Levine Biology 2018-01-01T00:00:00Z Some residents were asked to wake up before dawn for nucleic acid testing at their housing compounds, many queuing up in their pyjamas. China sends military, doctors to Shanghai to test 26 million residents for COVID 2022-04-04T04:00:00Z Shanghai authorities told a press conference on Wednesday that since the lockdown began on Monday they had conducted 9.1 million nucleic acid tests. Shanghai expands COVID lockdown as new daily caseload surges by a third 2022-03-30T04:00:00Z “There was some hope of treatment. Unfortunately, we had to wait for a nucleic acid test report and missed the best treatment time.” 'Refuse quarantine!': frustrations mount as China replays COVID controls 2022-03-22T04:00:00Z The nucleic acids are loaded into a slot near the negative electrode of a semisolid, porous gel matrix and pulled toward the positive electrode at the opposite end of the gel. Biology for AP Courses 2022-06-09T00:00:00Z Phosphorus is necessary for molecules such as nucleic acids. Miller & Levine Biology 2018-01-01T00:00:00Z In Shanghai, those who must leave the city, as well as those entering the city, must show a negative nucleic acid test taken in the past 48 hours. China’s zero covid wavers as infections spread and complaints over lockdowns surge 2022-03-16T04:00:00Z The Shanghai government said on its official WeChat account late on Tuesday that those who refused to comply with nucleic acid testing could be found legally liable. Shanghai expands COVID lockdown as new daily caseload surges by a third 2022-03-30T04:00:00Z "The long-distance bus station has been closed, and nucleic acid tests are required when travelling to other provinces," said Loyd Ge, 34, a Shanghai resident. China records more local COVID cases this year than in whole of 2021 2022-03-14T04:00:00Z Gel electrophoresis separates the nucleic acid fragments according to their size. Biology for AP Courses 2022-06-09T00:00:00Z “Those who come or return to Shanghai must have a negative nucleic acid test report within 48 hours before arrival,” said a city health agency statement. China’s virus cases rise, access to Shanghai tightened 2022-03-12T05:00:00Z In the financial hub of Shanghai, the Disneyland resort said it would reduce its guest capacity and from Sunday require visitors to present negative nucleic acid test results taken within 24 hours. China daily local COVID cases hit two-year high of over 1,500 2022-03-12T05:00:00Z The concentrated COVID-19 work has also helped make mRNA a leader in nucleic acid therapeutics—approaches that can produce nearly any protein made by a specific cell. Messenger RNA Therapies Are Finally Fulfilling Their Promise 2022-03-02T05:00:00Z The logistical challenges have prompted authorities to announce plans for simplified procedures that will allow those testing positive with rapid tests to report their results without undergoing more stringent nucleic acid testing. Hong Kong to let some COVID-positive children stay home amid separation fears 2022-02-26T05:00:00Z They both replicate within a host cell and contain nucleic acids. Biology for AP Courses 2022-06-09T00:00:00Z As an additional precaution, Beijing will require travelers to take nucleic acid tests within 72 hours of entering the city starting Jan. 22. Beijing residents disappointed Olympics will be closed event 2022-01-19T05:00:00Z As an additional precaution, Beijing will require travelers to take nucleic acid tests within 72 hours of entry starting Jan. 22. Single omicron case in Beijing draws national attention 2022-01-17T05:00:00Z Beijing Daily reported Sunday that the capital will require travelers to take nucleic acid tests within 72 hours of entry starting Jan. 22. China anti-virus measures in full-force after Beijing case 2022-01-16T05:00:00Z Residents are to remain where they are until the results of all the nucleic acid tests are received, the official Xinhua News Agency said. China’s Tianjin orders more testing on 14 million residents 2022-01-11T05:00:00Z Nitrogen needed to synthesize proteins and nucleic acids is often the most limiting element in ecosystems and bacteria are able to “fix” nitrogen into forms that can be used by eukaryotes. Biology for AP Courses 2022-06-09T00:00:00Z “Waited an hour for a nucleic acid test. After buying my ticket, I was told I would need a special certificate from my local neighborhood office,” the post began. One person caught the coronavirus. China locked down 200,000 of their neighbors. 2021-12-22T05:00:00Z They also need to take two nucleic acid tests with 96 hours of boarding their flights and receive a green health code issued by the Chinese government showing they are virus-free. Beijing Games relying on charters, temporary flights 2021-12-10T05:00:00Z As their name suggests, mRNA vaccines depend on the nucleic acid known as RNA. mRNA vaccines changed the course of the pandemic. Now, they could cure all kinds of other diseases 2021-11-22T05:00:00Z It must be an antigen or nucleic acid amplification test that has been approved for emergency use by the Food and Drug Administration. The U.S. Is Reopening. Here’s What Travelers Need to Know About Testing, Boosters and More. 2021-11-05T04:00:00Z Nitrogen is a macronutrient and necessary component of proteins and nucleic acids. Biology for AP Courses 2022-06-09T00:00:00Z “The claim is technically true. PCR is measuring viral nucleic acids, not viruses per se,” he said in an email. Analysis | The repeated claim that Fauci lied to Congress about ‘gain-of-function’ research 2021-10-29T04:00:00Z This particular enzyme also cuts other nearby nucleic acids, freeing a fluorescent protein that emits light. Pathogen-Sensing Mask Could Detect COVID Infection 2021-10-22T04:00:00Z Rather than correcting existing genes, this technique uses short sequences of nucleic acids, or oligonucleotides, to influence how cells translate genes into proteins. The Definition of Gene Therapy Has Changed 2021-10-19T04:00:00Z The traveler, identified by the surname Lin, underwent a 14-day quarantine and nine nucleic acid and serologic tests, all of which were negative, the Global Times said. China keeps virus at bay at high cost ahead of Olympics 2021-09-20T04:00:00Z The carbon and nitrogen derived from amino acids also become building blocks for nucleic acids. Biology for AP Courses 2022-06-09T00:00:00Z He had served 21 days in quarantine, during which he had taken nine nucleic acid and serologic tests, all of which were negative, said a report in the state-run Global Times newspaper. China's latest Covid outbreak linked to primary school 2021-09-14T04:00:00Z The city of 11 million is “swiftly launching comprehensive nucleic acid testing of all residents”, senior Wuhan official Li Tao said at a press conference on Tuesday. Coronavirus live news: US reaches 70% first-shot goal while Japan shifts to home care for most Covid patients 2021-08-03T04:00:00Z In this case, the primer is built to identify a nucleic acid found only in the covid virus. Claims that CDC’s PCR test can’t tell COVID from flu are wrong 2021-08-02T04:00:00Z Nanjing was conducting a second round of nucleic acid testing of its 9.3 million residents on Sunday, the official China Daily said on Monday. Coronavirus live news: China reports highest cases since January; France adopts vaccine passports law 2021-07-26T04:00:00Z Of the four macromolecules in biological systems, both proteins and nucleic acids contain nitrogen. Biology for AP Courses 2022-06-09T00:00:00Z In bacteria, for instance, as cells get larger, concentrations of protein molecules decrease, whereas concentrations of nucleic acids increase. New Approach Could Boost the Search for Life in Otherworldly Oceans 2021-07-16T04:00:00Z People leaving Guangdong by plane, train, bus or private car after 10 p.m. on Monday must present results of a nucleic acid test within the past 72 hours, the provincial government announced. China re-imposes travel curbs on province after virus cases 2021-05-30T04:00:00Z Residents of the city with such a passport and a negative COVID-19 nucleic acid test result should be able to travel to the mainland without being subject to the quarantine requirements, he said. Chinese delegates to propose vaccine passports at annual meetings: Global Times 2021-03-03T05:00:00Z Those who are going anyway must to present a nucleic acid test with negative results taken in the seven days before returning home. China's peak Lunar New Year air travel season fizzles as COVID cases rise 2021-01-26T05:00:00Z Mammals also form some uric acid during breakdown of nucleic acids. Biology for AP Courses 2022-06-09T00:00:00Z A second round of mass nucleic acid testing began on Tuesday. Facing New Outbreaks, China Places Over 22 Million on Lockdown 2021-01-13T05:00:00Z Travellers must present a negative nucleic acid COVID-19 test result taken within 72 hours before boarding a train or an airplane in the province. China reports biggest rise in daily COVID cases in five months 2021-01-07T05:00:00Z Your metabolism accomplishes three main jobs: converting food into energy; breaking down food into its building blocks for protein, lipid, nucleic acid and some carbohydrate; and eliminating nitrogen wastes. Some people can eat anything and not gain a pound. How metabolism affects the calories you burn each day. 2020-12-31T05:00:00Z “Too many uncertainties. We might be asked to do nucleic acid tests.” Chinese tourists, gripped by coronavirus fears, scale back domestic travel plans 2020-12-30T05:00:00Z Uric acid is a compound similar to purines found in nucleic acids. Biology for AP Courses 2022-06-09T00:00:00Z A machine extracts nucleic acids from the sample, placing them into a small tube with various chemical reagents, including an enzyme that converts viral RNA, which is present in coronaviruses, into DNA. CDC squandered weeks pursuing complex test at pandemic’s start 2020-12-26T05:00:00Z The wet–dry cycles on the edges of the pools would have driven the formation and copying of nucleic acids such as RNA. How the First Life on Earth Survived Its Biggest Threat—Water 2020-12-16T05:00:00Z Authorities ordered nucleic acid testing of all residents to detect new cases after the country’s latest local outbreak first emerged late last week. Asia Today: SKorea cases jump over 500 amid reimposed rules 2020-11-25T05:00:00Z Zhou said authorities would run regular nucleic acid tests for high-risk cargo workers and offer them emergency use of vaccines on a voluntary basis. Shanghai Covid outbreak 'traced to cargo from North America' 2020-11-23T05:00:00Z PAMPs are carbohydrate, polypeptide, and nucleic acid “signatures” that are expressed by viruses, bacteria, and parasites but which differ from molecules on host cells. Biology for AP Courses 2022-06-09T00:00:00Z These were synthetic nucleic acids to be added to the mixture of other reagents. CDC squandered weeks pursuing complex test at pandemic’s start 2020-12-26T05:00:00Z In 2018, his team showed that vesicles could form in hot spring water, and even enclose nucleic acids—but they would not form in seawater. How the First Life on Earth Survived Its Biggest Threat—Water 2020-12-16T05:00:00Z In one of the videos, an announcement blares on a loop: “Please queue for the nucleic acid testing. Don’t push, and be careful of your safety.” Panic grips Shanghai airport after employees are sealed in for coronavirus testing 2020-11-23T05:00:00Z Although other scientists have advanced proposals for what may be even more potent vaccine antigens, Graham is confident that carefully designed vaccines using nucleic acids like RNA reflect the future of new vaccines. For Billion-Dollar COVID Vaccines, Basic Government-Funded Science Laid the Groundwork 2020-11-18T05:00:00Z Nitrogen is a major component of our nucleic acids and proteins and is critical to human agriculture. Biology for AP Courses 2022-06-09T00:00:00Z “After the nucleic acid test screening, the people and administrative officials felt at ease,” said Wu Zunyou, chief epidemiologist for the Chinese Centre for Disease Control, in an interview with local media. Organised 'overkill': China shows off rapid lockdown system after latest outbreak 2020-10-30T04:00:00Z This is because proteins, and nucleic acids such as DNA and RNA, are vulnerable at their joints. How the First Life on Earth Survived Its Biggest Threat—Water 2020-12-16T05:00:00Z The state accepts only negative nucleic acid amplification tests from certain entities. The Latest: South Korea reports 77 cases tied to hospitals 2020-10-24T04:00:00Z The state accepts only negative nucleic acid amplification tests. Tens of thousands arrive in Hawaii with pre-travel testing 2020-10-23T04:00:00Z There are two types of nucleic acids: DNA and RNA. Biology for AP Courses 2022-06-09T00:00:00Z Reingold said Conley’s memo suggests that Trump tested positive but that the result indicated a low level of viral nucleic acids. Trump says he’s not contagious. Health experts say that’s not certain. 2020-10-11T04:00:00Z Proteins are made of chains of amino acids, and nucleic acids are chains of nucleotides. How the First Life on Earth Survived Its Biggest Threat—Water 2020-12-16T05:00:00Z The first set of HIV drugs were nucleic acid inhibitors, known as chain terminator drugs. Lessons from AIDS for the COVID-19 Pandemic 2020-09-29T04:00:00Z The nucleic acid tests were developed by Cambridge spinout company Diagnostics for the Real World, using technology originally developed for ono-the-spot HIV tests in Africa. Nasal swab followed by antibody test may catch incorrect Covid-19 diagnoses 2020-09-02T04:00:00Z Enzymes within the lysosomes aid the breakdown of proteins, polysaccharides, lipids, nucleic acids, and even worn-out organelles. Biology for AP Courses 2022-06-09T00:00:00Z The approach amplifies a sequence of nucleic acids in order to detect tiny amounts of the virus. How accurate are virus tests? What’s behind Ohio governor’s yes/no results. 2020-08-07T04:00:00Z By contrast, chemical experiments that simulate surface conditions have made the building blocks of nucleic acids, proteins and lipids. How the First Life on Earth Survived Its Biggest Threat—Water 2020-12-16T05:00:00Z Our bodies also use proteases for normal functioning, and we need polymerases to replicate our own nucleic acids. Lessons from AIDS for the COVID-19 Pandemic 2020-09-29T04:00:00Z Dalian, with a population of nearly 7.0 million, plans to conduct nucleic acid testing for 190,000 people in the city, state media said. Mainland China reports 22 new coronavirus cases, including 18 in Xinjiang 2020-07-23T04:00:00Z Other examples are the synthesis of large proteins from amino acid building blocks, and the synthesis of new DNA strands from nucleic acid building blocks. Biology for AP Courses 2022-06-09T00:00:00Z The nucleic acid tests must be completed five days before embarking, the Civil Aviation Administration of China said in a statement on its website. China requires negative COVID-19 tests for arriving air passengers 2020-07-21T04:00:00Z The test uses small paper that works differently from ones that detect nucleic acid from the virus. NIH’s ‘Shark Tank’-style competition helps develop rapid coronavirus test 2020-07-19T04:00:00Z China also foresaw the importance of nucleic acid test kits, which can detect coronavirus infections. China Dominates Medical Supplies, in This Outbreak and the Next 2020-07-05T04:00:00Z But the idea that packages of nucleic acids were shared between cells suggested a whole new realm of cellular communication. The biologist on the hunt for extracellular ribosomes 2020-06-16T04:00:00Z Catabolic reactions produce energy and water molecules, whereas in anabolic reactions this free energy is utilized by simpler compounds to make only proteins and nucleic acids. Biology for AP Courses 2022-06-09T00:00:00Z Chinese state media, Xinhua, said on Monday more than 60,000 nucleic acid tests were conducted on Sunday, finding no asymptomatic cases in Wuhan. Global report: Wuhan reports no asymptomatic cases for first time 2020-06-01T04:00:00Z State media, Xinhua, said on Monday more than 60,000 nucleic acid tests were conducted on Sunday, finding no asymptomatic cases. Coronavirus live news: Manila eases lockdown as Japan considers allowing visitors from selected countries 2020-06-01T04:00:00Z Advances in sequencing nucleic acids and proteins from single cells — preferably performed in situ without disrupting the tumour architecture — should help to decipher details of the myriad steps in cancer evolution13. Take lessons from cancer evolution to the clinic 2020-05-26T04:00:00Z Molecular methods that detect nucleic acids are uniquely suited to this task because such infectious agents contain DNA, RNA, or both, that enables their recognition and identification. CRISPR tool scales up to interrogate a huge line-up of viral suspects 2020-05-17T04:00:00Z Moreover, the five-carbon sugars that form nucleic acids are made from intermediates in glycolysis. Biology for AP Courses 2022-06-09T00:00:00Z Reuters, citing an internal document to district officials, reported on May 11 that the city planned to conduct the campaign of city-wide nucleic acid tests over 10 days. China's Wuhan says tested almost a third of residents for coronavirus since April 2020-05-15T04:00:00Z “A nucleic acid test is your responsibility to yourself, your family and society,” read a post from the Changqing Garden No. 2 Neighborhood District Committee. Here’s How Wuhan Plans to Test All 11 Million of Its People for Coronavirus 2020-05-14T04:00:00Z It was also somewhat impractical given that the limited accuracy of the nucleic acid virus tests were not followed by restrictions on movement. Wuhan reopened last month. Now, new coronavirus infections spark fresh restrictions and fear 2020-05-13T04:00:00Z Some Cas proteins cut target nucleic acids only at a specific site related to the guide sequence. CRISPR tool scales up to interrogate a huge line-up of viral suspects 2020-05-17T04:00:00Z They isolated the S strain from the dead mice and isolated the proteins and nucleic acids, namely RNA and DNA, as these were possible candidates for the molecule of heredity. Biology for AP Courses 2022-06-09T00:00:00Z However, these same receptors are often linked to the erroneous detection of ‘self’ nucleic acids in autoimmune diseases3. Fourth defence molecule completes antiviral line-up 2020-05-12T04:00:00Z Wuhan, the epicentre of China’s coronavirus outbreak, plans to conduct nucleic acid testing across the city of 11 million after a cluster of new infections emerged, sources said. Slowly but steady, China strives to make widespread virus testing the new normal 2020-05-13T04:00:00Z “Each district shall make arrangements for nucleic acid screening plan for all members within 10 days,” said a Wuhan government notice. Global report: Brazil and Mexico record deadliest day from Covid-19 2020-05-13T04:00:00Z Two categories of emulsified droplet are needed for this platform — sample droplets and droplets that enable the detection of a specific nucleic acid. CRISPR tool scales up to interrogate a huge line-up of viral suspects 2020-05-17T04:00:00Z Carbon is the major element in all macromolecules: carbohydrates, proteins, nucleic acids, lipids, and many other compounds. Biology for AP Courses 2022-06-09T00:00:00Z “Each district should make plans and arrangements to conduct nucleic acid tests on the entire population in its jurisdiction within a 10-day time limit,” the notice said, although it was unclear when testing would begin. Wuhan plans to test all 11 million residents for coronavirus 2020-05-12T04:00:00Z One study from Hong Kong found the virus’ nucleic acid in the saliva of a patient whose symptoms appeared 25 days earlier. He was symptom free. But the coronavirus stayed in his body for 40 days 2020-04-30T04:00:00Z Three official documents were needed: A green health code, home neighborhood approval and a recent nucleic acid test. Leaving Wuhan: Getting into virus-hit city was the easy part 2020-04-22T04:00:00Z Patients in China are discharged after two negative nucleic acid tests, taken at least 24 hours apart, and if they no longer show symptoms. Recovered, almost: China's early patients unable to shed coronavirus 2020-04-22T04:00:00Z Nitrogen represents 12 percent of the total dry weight of a typical cell and is a component of proteins, nucleic acids, and other cell constituents. Biology for AP Courses 2022-06-09T00:00:00Z You can’t see it happen, but the high-energy light is absorbed in the cellular RNA and DNA of microorganisms, damaging nucleic acids to prevent them from reproducing. Virginia Medical Center staff create virus-battling robot 2020-04-19T04:00:00Z At the lab, nucleic acid is extracted from the sample and placed into a small tube, along with solutions of various chemical reagents, including an enzyme that converts viral RNA, if present, into DNA. Contamination at CDC lab delayed rollout of coronavirus tests 2020-04-18T04:00:00Z Some forced multiple nucleic acid tests on journalists and 48 hours of quarantine. Leaving Wuhan: Getting into virus-hit city was the easy part 2020-04-22T04:00:00Z Foxconn told the Post in a statement that it was implementing “all recommended health and hygiene practices . . . including the use of nucleic acid tests and chest X-rays when required.” Foxconn workers in China face daily temperature checks, thermal screenings 2020-04-14T04:00:00Z The carbon and nitrogen derived from these become the building block for nucleotides, nucleic acids, proteins, cells, and tissues. Biology for AP Courses 2022-06-09T00:00:00Z The government will expand nucleic acid test coverage, especially for people who leave Wuhan and who will work in teaching, the medical sectors and public services, it said. China will step up coronavirus testing for people leaving Wuhan 2020-04-13T04:00:00Z Among the additional restrictions, China is mandating 28 days of quarantine for all arrivals from abroad as well as nucleic acid and antibody tests, Reuters reported. Russian border new battleground as China's COVID-19 cases sharply rise: report 2020-04-13T04:00:00Z The border city of Suifenhe and Harbin, capital of Heilongjiang, said they would require all arrivals from abroad to undergo 28 days of quarantine, as well as nucleic acid and antibody tests. China toughens restrictions on border with Russia as imported coronavirus cases hit record 2020-04-12T04:00:00Z Foxconn said in a statement that it was implementing “all recommended health and hygiene practices . . . including the use of nucleic acid tests and chest X-rays when required.” Infrared cameras, personal towels: China factories go to extremes to fend off virus 2020-04-08T04:00:00Z However, when we explored concepts about biological molecules in the chapter on biological macromolecules, we learn how macromolecules—carbohydrates, lipids, proteins, and nucleic acids—are synthesized from monomers. Biology for AP Courses 2022-06-09T00:00:00Z People leaving the city still face numerous hurdles at their final destinations, such as 14-day quarantines and nucleic acid tests. Masked crowds fill streets and trains in post-lockdown Wuhan 2020-04-08T04:00:00Z That includes being required to undergo 14-day quarantines and submit to nucleic acid tests. 65,000 flee Wuhan within hours as lockdown ends 2020-04-07T04:00:00Z This new generation of vaccines is made from nucleic acids, the building blocks of genes, rather than from proteins. Protecting Ourselves from the Next Pandemic 2020-03-28T04:00:00Z The test employs simultaneous reverse transcription of the viral RNA and loop-mediated amplification, a simplified nucleic acid amplification technique that uses PCR-style primers but that does not require repeated cycles of heating and cooling. Fast, Portable Tests Come Online to Curb Coronavirus Pandemic 2020-03-23T04:00:00Z These elements form the major biological molecules—nucleic acids, proteins, carbohydrates, and lipids—that are the fundamental components of living matter. Biology for AP Courses 2022-06-09T00:00:00Z “That’s what allows us to move quickly once a platform is established to deliver to a tissue of interest,” says Jonathan Watts, a nucleic acid chemist at the University of Massachusetts Medical School. A Breakthrough in Genetic Medicine for Rare Diseases 2020-03-23T04:00:00Z This probably reflects the fact that many reactions that occur in the nucleus involve disordered proteins acting in conjunction with electrically charged strings of nucleic acids, providing an optimal environment for LLPS20. Chromatin modified in a molecular reaction chamber 2020-03-10T04:00:00Z Li was finally able to administer a nucleic acid test on Friday; the result returned positive for coronavirus but ambiguous. Coronavirus deaths climb as China corrals sick in quarantine facilities in outbreak epicenter 2020-02-09T05:00:00Z Scientists sequenced the virus, according to the report, and then used nucleic acid testing to identify the virus in 14 additional patients. Scientists urge China to quickly share data on virus linked to pneumonia outbreak 2020-01-09T05:00:00Z The inorganic molecules assembled to form the amino acids and nucleic acids. Biology for AP Courses 2022-06-09T00:00:00Z “Your cells, your macromolecules, are literally made up of protein, fat, carbohydrates, nucleic acids. When you do not eat one of the three macronutrients — those three things I just mentioned — you’re starving yourselves,” Michaels continued. Jillian Michaels says political correctness is 'glamorizing' obesity 2019-12-06T05:00:00Z The spherical shape lets us pack a high density of nucleic acid “spines” into a small space, and that density creates a strong interaction with receptors on cell surfaces that admit the particles inside. The Power of Spheres 2019-12-03T05:00:00Z Gradually, molecules emerged that were more resistant to nucleases, enzymes that form part of the body’s mechanism for degrading stray nucleic acids. Why rare genetic diseases are a logical focus for RNA therapies 2019-10-15T04:00:00Z Finally, Crick expounded what he called the ‘central dogma’ of biology: that information can flow from nucleic acids to proteins, but not the other way round11. The structure of DNA 2019-10-08T04:00:00Z The four categories of macromolecules are carbohydrates, lipids, proteins, and nucleic acids. Biology for AP Courses 2022-06-09T00:00:00Z Ribose is a sugar and a key ingredient of RNA, the nucleic acid present in all modern life, related to the more complex DNA. BYU helping NASA prep for human mission to Mars 2019-07-04T04:00:00Z We were curious, though, about how nucleic acids in this new geometry would interact with living systems. The Power of Spheres 2019-12-03T05:00:00Z In 1971, for example, he posed the paradox that without error-correction enzymes, the length of a nucleic acid would be limited because, in larger molecules, mutations would destroy the information content of subsequent generations. Manfred Eigen (1927–2019) 2019-02-27T05:00:00Z Rather, scientists think they are prions, or “infectious proteins without associated nucleic acids,” the Centers for Disease Control and Prevention explains. Deadly 'zombie' deer disease threat prompts Louisiana lawmaker to act: It's 'critical' to find a cure 2019-02-15T05:00:00Z Conserved through evolution in all organisms, nucleic acids store and transmit hereditary information. Biology for AP Courses 2022-06-09T00:00:00Z Microbial bodies contain molecules like proteins, fats and nucleic acids, which are made up of carbon, nitrogen, phosphorus and other elements. One way to reduce food waste: Use it to make soil healthier 2018-11-22T05:00:00Z The spiny round particles are called spherical nucleic acids. The Power of Spheres 2019-12-03T05:00:00Z Carrying proteins, lipids and nucleic acids, these particles ejected from a cell act like a postal system that extends to all parts of the body, releasing little packages known as extracellular vesicles. How Dad's Stresses Get Passed Along to Offspring 2018-11-08T05:00:00Z His early work confirmed predictions that enzymes would change their 3D shape on binding to their substrates, and this led to work on interactions between proteins and nucleic acids. Thomas A. Steitz (1940–2018) 2018-10-29T04:00:00Z The genetic code is based on each amino acid being coded for by a distinctive series of three nucleic acid bases called a codon. Biology for AP Courses 2022-06-09T00:00:00Z And it’s not just any nucleic acid that matters; it is human chromosomal DNA. Genetic determinism rides again 2018-09-24T04:00:00Z We recently compared our spheres, studded with nucleic acids that get inside cells and interfere with messenger molecules that lead to SMA’s symptoms, with the Spinraza approach in studies of rodents. The Power of Spheres 2019-12-03T05:00:00Z However, even as Schrödinger was preparing his lectures, the microbiologist Oswald Avery was finding evidence that they were nucleic acids. Schrödinger’s cat among biology’s pigeons: 75 years of What Is Life? 2018-08-28T04:00:00Z Furthermore, the specificity of each protein’s interaction with the Pol II complex is ensured by multiple interaction interfaces, often with scaffold proteins such as SPT5 and the nucleic acids. Transcriptional speed bumps revealed in high resolution 2018-08-21T04:00:00Z What is the difference between the effects of the changes in the two types of nucleic acids? Biology for AP Courses 2022-06-09T00:00:00Z The studies use this activity as a signal amplifier, whereby the cutting of many arbitrary nucleic acids serves as a beacon for the detection of one specific molecule. From CRISPR scissors to virus sensors 2018-04-29T04:00:00Z Spherical nucleic acids, or SNAs, avoid problems that have plagued the pharmaceutical industry’s attempts to develop new drugs. The Power of Spheres 2019-12-03T05:00:00Z In our structure, RT is in an inactive polymerase conformation with open fingers and thumb and with the nucleic acid primer–template complex shifted away from the active site. Architecture of an HIV-1 reverse transcriptase initiation complex 2018-04-24T04:00:00Z Sulston arrived in 1966 to study the replication of nucleic acids, and, for the first time he understood the evolutionary context of his work in chemistry. John Sulston (1942–2018) 2018-03-18T04:00:00Z Bonds in the purine and pyrimidine rings of nucleic acids are broken by high-energy uv radiation. Biology for AP Courses 2022-06-09T00:00:00Z The tools of molecular biology, including nucleic acid sequencing, developed through the latter half of the 20th century, finally helped open the vault on the origins of the 1918 pandemic. Influenza's Wild Origins in the Animals Around Us 2018-03-11T05:00:00Z Biologists have tried to use nucleic acids in the past but primarily as linear molecules and with little ability to direct where they go. The Power of Spheres 2019-12-03T05:00:00Z Some companies have also introduced another rapid flu diagnostic they say is more accurate: molecular-based tests, which detect viral nucleic acid in patient specimens. At the Doctor’s Office, Expect Better, More Reliable Flu Tests 2018-02-24T05:00:00Z His PhD, also at Cambridge, was on the synthesis of oligonucleotides — the building blocks of nucleic acids such as DNA and RNA. John Sulston (1942–2018) 2018-03-18T04:00:00Z Modern viruses are thought to be a mosaic of bits and pieces of nucleic acids picked up from various sources along their respective evolutionary paths. Biology for AP Courses 2022-06-09T00:00:00Z To him and some other scientists, proteins seem like a “more natural starting point” because they are easier to make than nucleic acids. Life's First Molecule Was Protein, Not RNA, New Model Suggests 2017-11-12T05:00:00Z When exposed to ultraviolet light, it creates crosslinks between strands of nucleic acid, “effectively shutting down all transcription or translation or replication from the cells”, says Cerus's chief medical officer, Richard Benjamin. Screening: In the blood : Nature : Nature Research 2017-09-26T04:00:00Z IBI Scientific manufactures bench-top laboratory equipment, nucleic acid purification products, electrophoresis products, molecular biology reagents, polymerase chain reaction enzymes and more. Iowa company creates products needed for scientific research 2017-08-19T04:00:00Z Most research into life’s origins has focused on how organic building blocks, like amino acids and nucleic acids, arose and assembled themselves into proteins and RNA. How sunlight might have jump-started life on Earth 2017-07-12T04:00:00Z A virion consists of a nucleic acid core, an outer protein coating or capsid, and sometimes an outer envelope made of protein and phospholipid membranes derived from the host cell. Biology for AP Courses 2022-06-09T00:00:00Z For scientists studying the origin of life, one of the greatest chicken-or-the-egg questions is: Which came first — proteins or nucleic acids like DNA and RNA? Life's First Molecule Was Protein, Not RNA, New Model Suggests 2017-11-12T05:00:00Z But controlling every company in the world that produces nucleic acids is impossible, says Keim. How Canadian researchers built a poxvirus for $100,000 using mail-order DNA 2017-07-06T04:00:00Z Eight percent of offspring of pregnant women in U.S. territories with a positive nucleic acid test for Zika infection in the first trimester had birth defects linked to the virus. 5% of U.S. Pregnant Women With Zika Had Baby With a Birth Defect 2017-06-08T04:00:00Z Samples with residual tumour tissue after extraction of nucleic acids were considered for proteomics analysis. Integrated genomic characterization of oesophageal carcinoma : Nature : Nature Research 2017-01-03T05:00:00Z All virions have a nucleic acid genome covered by a protective layer of proteins, called a capsid. Biology for AP Courses 2022-06-09T00:00:00Z For most of life’s history, nucleic acids have handled the former job and proteins the latter one. Life's First Molecule Was Protein, Not RNA, New Model Suggests 2017-11-12T05:00:00Z Prof Balasubramanian is an internationally recognised authority in the field of nucleic acids, which are essential for all forms of life and are responsible for holding and transmitting genetic information. Scientists' work recognised in New Year Honours - BBC News 2016-12-30T05:00:00Z In the 19th century, they had identified a substance in the nucleus of cells, first called nuclein and later nucleic acid, that they suspected was involved. A world without DNA and black holes: The state of science the last time the Chicago Cubs won the World Series 2016-10-26T04:00:00Z First, how did long nucleic acids such as RNA and DNA first form? The secret ingredient to early life’s primordial soup: Thickener 2016-10-10T04:00:00Z Next, the viral nucleic acid, either DNA or RNA, enters the host cell, either naked, leaving the protein capsid behind, or with the capsid. Biology for AP Courses 2022-06-09T00:00:00Z The agency urged blood centers to use one of two experimental tests intended to detect active infections, called nucleic acid tests, before releasing donated blood for use in transfusions. All Donated Blood in U.S. Should Be Tested for Zika, F.D.A. Says 2016-08-26T04:00:00Z Simply put, the machine measures the nucleic acid in a patient's specimen - spit, say - and detects a disease's signature DNA sequence. How disease testing tech is saving lives faster - BBC News 2016-09-19T04:00:00Z To get around this problem, the FDA’s new guidance calls for testing all donated blood using a so-called nucleic acid test. All blood in the U.S. should be screened for Zika, FDA says 2016-08-26T04:00:00Z In perhaps the most thought-provoking project, Baker’s team has designed proteins to carry information, imitating the way DNA’s four nucleic acid letters bind and entwine in the genetic molecule’s famed double helix. This protein designer aims to revolutionize medicines and materials 2016-07-21T04:00:00Z Viral nucleic acid then becomes available for replication and transcription. Biology for AP Courses 2022-06-09T00:00:00Z Dr. Collins took a cell’s normal reproductive “machinery” — including proteins, nucleic acids and ribosomes — and freeze-dried it on paper. Rapid Zika Test Is Introduced by Researchers 2016-05-06T04:00:00Z In a lab with some $2 million of equipment, Libby Gilbert-Horvath, a geneticist, put F12’s clip into a solution to break the sample into molecular parts, like proteins and nucleic acids. To Save Its Salmon, California Calls In the Fish Matchmaker 2016-01-15T05:00:00Z In the future, if a pathogen reduction technology becomes available for red blood cells or for whole blood, these methods could be used instead of a nucleic acid test, the FDA said. All blood in the U.S. should be screened for Zika, FDA says 2016-08-26T04:00:00Z The genome is simple in comparison — it is assembled with just four nucleic acids and changes little over a person's lifetime, except in the special case of cancer. Proteomics: High-protein research : Nature : Nature Publishing Group 2015-11-03T05:00:00Z During the release step, the nucleic acid is released from the viral capsid or envelope. Biology for AP Courses 2022-06-09T00:00:00Z Plaque eliminates that problem: it carries between 100 and 1,000 times more nucleic acids per milligram than any other known source. Meet the Dentist to the Dead 2015-10-17T04:00:00Z These advances will enable vectors to target tissues and cell types precisely64, 73, 107, and overcome cellular restrictions on gene transduction and bypass sensors of exogenous nucleic acids. Gene therapy returns to centre stage : Nature : Nature Publishing Group 2015-10-13T04:00:00Z The light causes the molecules to bind irreversibly to the nucleic acids and thus prevent their replication. The INTERCEPT Blood System Rids Blood Donations of All Pathogens 2015-07-01T04:00:00Z For example, Deamer is using it to detect and study the kinds of nucleic acids that might have given rise to Earth’s earliest life. Pint-sized DNA sequencer impresses first users 2015-05-04T04:00:00Z The entry step is the most critical as nucleic acid of virus needs to enter the host cell naked, leaving the capsid outside. Biology for AP Courses 2022-06-09T00:00:00Z Then it crosslinks the nucleic acids – zipping back up the DNA or RNA crookedly – which prevents replication and inactivates the pathogens. A Bug Zapper for Blood: Intercept System Deactivates Pathogens in Donated Plasma 2015-03-24T04:00:00Z What is more, Sutherland says, the conditions that produce nucleic acid precursors also create the starting materials needed to make natural amino acids and lipids. Researchers may have solved origin-of-life conundrum 2015-03-16T04:00:00Z The procedure does no harm to the plasma or platelets because they contain no nucleic acids of their own. The INTERCEPT Blood System Rids Blood Donations of All Pathogens 2015-07-01T04:00:00Z These cells contain tiny spherical crystallites made from guanine, one of the nucleic acid building blocks of DNA. New film changes colors when you stretch it 2015-03-12T04:00:00Z They both replicate within a host cell and do not contain nucleic acids. Biology for AP Courses 2022-06-09T00:00:00Z These cells, called iridophores, contain tiny crystals made from guanine, one of the nucleic acid building blocks of DNA. The secret to chameleon color change: Tiny crystals 2015-03-10T04:00:00Z He studies threose nucleic acid, which is not found in nature but can be synthesized in the lab. 'Shadow biosphere' might be hiding strange life right under our noses 2015-02-14T05:00:00Z Today doctors have nucleic acid tests that can diagnose an H.I.V. infection within nine to 11 days of exposure, and all blood donations have to be tested before being shipped for transfusion. F.D.A. Easing Ban on Gays, to Let Some Give Blood 2014-12-23T05:00:00Z Say a ribozyme capable of transforming a pool of mixed nucleic acids into left- and right-handed RNAs appeared on the early Earth. New Twist in Life’s Start Could Aid Efforts to Make It from Scratch 2014-12-05T05:00:00Z The holes are tiny but wide enough to let in a variety of behavior-altering agents, including proteins, nucleic acids and carbon nanotubes. How to Hijack A Cell 2014-11-25T05:00:00Z If there are commonalities between our oceans and the icy stuff on the comet—namely, organic compounds such as nucleic acids and amino acids—we can, as Schwehm says, “put pieces of the puzzle together.” The Ten-Year Journey to Land on a Comet 2014-11-10T05:00:00Z But before anyone starts making grand extrapolations about the interchangeability of life’s nucleic acid elixirs, physicists arguably need to understand how life sustains itself through the free flow of information. Defining Life's Digital Software 2014-07-31T04:00:00Z One way to identify microbes is a microarray containing strands of nucleic acids complementary to DNA or RNA in different viruses. Molecular Computer Detects Ebola and Marburg Viruses 2014-07-21T04:00:00Z Around the same time, scientists were trying to figure out how the building blocks of life—amino acids and nucleic acids—could have spontaneously formed into more complex molecules such as proteins, DNA and RNA. New Twist in Life’s Start Could Aid Efforts to Make It from Scratch 2014-12-05T05:00:00Z That changed in 1999, with the advent of nucleic acid amplification testing. New England editorial roundup 2014-07-19T04:00:00Z As such, they represent privileged chemistry that has been tailored by evolution to interact with biological macromolecules, including proteins, nucleic acids, carbohydrates and membranes. Perspective: Synthetic biology revives antibiotics 2014-04-30T17:21:29.191Z Certainly, some species change more slowly than others, or the changes are more subtle, hidden in the details of nucleic acid sequences and biochemical function. The Unstoppable Extinction And Fermi’s Paradox 2014-03-20T19:34:23Z For these tests, doctors isolate and amplify viral nucleic acid in samples from an infected patient. Molecular Computer Detects Ebola and Marburg Viruses 2014-07-21T04:00:00Z The molecules that make up DNA and other nucleic acids such as RNA have an inherent “handedness.” New Twist in Life’s Start Could Aid Efforts to Make It from Scratch 2014-12-05T05:00:00Z Both lobes contain conserved clefts that may function in nucleic acid binding. [Research Article] Structures of Cas9 Endonucleases Reveal RNA-Mediated Conformational Activation 2014-03-13T18:25:50.501Z We’d also be able to customize ourselves by reaching into to those 3 billion or so nucleic acids in our DNA and doing a spot of molecular engineering, getting those purple earlobes we’ve always wanted. This Is What We Don’t Know About The Universe 2014-03-12T12:28:58Z He also showed that RNA, the nucleic acid that many scientists believe served as the precursor to DNA-based life, is a particularly cheap building material. A New Physics Theory of Life 2014-01-28T23:00:00Z When an input nucleic acid binds to a single-stranded closed loop on the DNAzyme, it triggers one end of the loop to separate from the stem of the DNAzyme. Molecular Computer Detects Ebola and Marburg Viruses 2014-07-21T04:00:00Z The DNA markers for specimens are extracted the tissue, replicated and then sequenced to represent the nucleic acids the sample contains. Why You Should Care About The Quest To Put DNA Barcodes On Every Species 2014-01-06T22:21:00Z "His invention of the two critical technical advances - for sequencing proteins and nucleic acids - opened up the fields of molecular biology, genetics and genomics," he said in a statement responding to news of Sanger's death. Double Nobel Prize winning biochemist Fred Sanger dies at 95 2013-11-20T13:25:36Z His invention of the two critical technical advances - for sequencing proteins and nucleic acids - opened up the fields of molecular biology, genetics and genomics. Nobel Prize winner Sanger dies at 95 2013-11-20T12:50:46Z The FDA’s new requirements would also extend to medically important “biologic” drugs—products composed of sugars, protein or nucleic acids that are typically made from living microorganisms. FDA Moves to Avert Drug Shortages 2013-10-31T22:45:00.440Z It doesn’t stain because there’s very little DNA or nucleic acids inside, so the cell isn’t actually doughnut-shaped, but the pattern is characteristic of the group. Missing Nitrogen May Be Vanishing in the Tubes of Giant Bacteria 2013-10-30T20:45:02.837Z Their high density of nucleic acids leads to interactions with membrane-bound scavenger proteins. Column: Animated science 2013-10-09T17:20:46.633Z “As long as there are sufficient nucleic acids preserved in the specimen, there is really no limit,” says Alison Devault, a researcher at McMaster University studying ancient cholera. Gene Sequencing Reveals the Dynamics of Ancient Epidemics 2013-09-12T14:18:09.457Z In fact, the sensitivity achieved was equivalent to the gold standard of nucleic acid testing, but at the cost of a much less expensive immunoassay. Paul Chapman's Quanterix Might Save Your Life 2013-09-03T19:53:00Z AuBuchon says it’s less than two weeks with the nucleic acid blood tests used at his centers. Gay Blood Drive puts pressure on FDA over rules 2013-07-13T04:37:58Z We now have a good understanding of how simple groupings of atoms might have come together under primordial conditions to form the basic building blocks of life like nucleic acid bases, sugars and amino acids. Lindau 2013: Supramolecular chemistry - Moving away from synthesis and toward design 2013-07-03T15:15:05.943Z A computer animation illustrates the activity of particles called spherical nucleic acids. Column: Animated science 2013-10-09T17:20:46.633Z Can we find a principled way to distinguish between the two complementary roles of nucleic acid sequences? Why Do Sequences Think They Are So Special? 2013-05-16T14:15:37.687Z The door is now open to explore the application of Simoa to many other applications once thought to be only addressable with nucleic acid testing. Paul Chapman's Quanterix Might Save Your Life 2013-09-03T19:53:00Z For example, the bill now uses a sweeping and very unscientific definition of “genetic engineering” to include “in vitro nucleic acid techniques, including recombinant DNA and direct injection of nucleic acid into cells or organelles.” Media and NGO Misinformation Alert: No, Hornless Cows Are Not 'Frankencows' -- Unless You Don't Understand Basic Genetics 2013-04-30T15:45:17Z The pioneers of protein and nucleic acid structure like Pauling, Perutz, Watson and Crick had proven the key role that hydrogen bonds play in holding proteins and DNA together. Lindau 2013: Supramolecular chemistry - Moving away from synthesis and toward design 2013-07-03T15:15:05.943Z Unlike a family tree, which is built using archive records of significant events like births, deaths and marriages, phylogenetic trees use the historic record written into the sequence of information stored in nucleic acids. Hepatitis C: Closing in on its viral origins 2013-04-27T01:17:47Z UV light mutates the nucleic acids in DNA, which results in an inability to divide easily or continue making important proteins. Nanopillars and a disinfected world 2013-03-15T13:15:00.363Z He soon managed to restrict the growth factor to a fraction of the tumor cells containing both protein and nucleic acid. The Nerve-Growth Factor: A New Tool for Manipulating Neurons 2013-01-03T11:15:00.190Z The cell itself retains evidence of its past in the amino acid sequences of its proteins and in the nucleotide sequences of its nucleic acids: DNA and RNA. Archaebacteria: The Third Domain of Life Missed by Biologists for Decades 2013-01-01T00:45:00.170Z They found that the partially purified factor contained both protein and nucleic acid. Finding the Good in the Bad: A Profile of Rita Levi-Montalcini 2012-12-30T17:45:00.203Z To expose any infectious payload that the bats carried, the team used a method called high-throughput sequencing, which surveys all of the genetic material - nucleic acids - present in their blood. Hepatitis C: Closing in on its viral origins 2013-04-27T01:17:47Z Starting with Watson and Crick’s solution of the structure of DNA, x-ray diffraction basically helped formulate the theory of nucleic acid and protein structure. Chemistry and Biology: Kuhnian or Galisonian? 2012-12-20T13:15:05.163Z The genome is coded by four nucleic acids that are always the same, making analysis of the genome a problem well suited to computer analysis. Megadata: The odd couple 2012-11-23T15:20:51.020Z The new technology for sequencing nucleic acids should enable biologists to uncover in relatively short order far more about the history of life than had been thought possible. Archaebacteria: The Third Domain of Life Missed by Biologists for Decades 2013-01-01T00:45:00.170Z So if nucleic acids arose independently on another planet, would they have the same bases? Chemical biology: DNA's new alphabet 2012-11-21T18:21:07.117Z The nucleic acids are made by joining up four kinds of nucleotide to form a polynucleotide chain. 100 Years Ago: Killing Locusts with Bacteria 2012-09-30T13:15:03.037Z Until now, the largest amount of data encoded in nucleic acid has been only 7,920 bits, around one-700th what Church’s team has accomplished. Researchers write book using DNA 2012-08-20T00:10:00Z They are the fourth major class of biological macromolecules, along with nucleic acids, proteins, and lipids. U.S. National Academy Report Sweet on Sugars 2012-08-16T20:43:22Z In amongst some of the snake DNA was foreign genetic material - nucleic acid - that closely resembled that present in viruses belonging to a family called . Lethal snake viruses identified 2012-08-14T16:46:31Z Many biomolecules such as proteins and nucleic acids are also piezoelectric—they generate electricity when compressed—but lack the toxicity of traditional devices. Bacteria-Eating Viruses May Power Cell Phones 2012-08-11T14:45:07.500Z After the discovery that DNA is the basis for genetic transmission, many researchers began to favor nucleic acids over proteins as the ur-molecules. Stanley Miller and the Quest to Understand Life's Beginning 2012-07-29T16:15:00.203Z And then sometimes they forget why they are doing this in the first place… We study nucleic acids because they are markers, or proxies, for proteins. Clocks, metabolism, evolution - toward an integrative chronobiology 2012-05-30T12:45:00.197Z The highly sensitive nucleic acid test, which U.S. blood banks introduced in 1999, will pick up HIV infections that occurred as recently as 12 days before the test, he said. With better HIV tests, should FDA end its ban on gay men donating blood? 2012-04-16T20:15:22Z This change eliminated the risk imposed by inserting a nucleic acid or plasmid. Stem Cells: Flexible friends 2012-02-29T18:21:27.080Z The substance is nucleic acid, the vital constituent of cells, the carrier of inherited characters in the fluid that links organic life with inorganic matter. First Mention: Life?s Blueprint, Slow to Newsprint 2012-02-27T21:33:22Z "This lab knows how to look at and detect these types of molecules," says Patrick A. Limbach, a chemist who studies mass spectrometry of nucleic acids at the University of Cincinnati. Closely Watched Study Fails to Find Arsenic in Microbial DNA 2012-02-02T18:50:36Z Their experiments looked at the nucleic acids found in RNA, a chemical in cells that translates the genetic information contained in DNA. H. Gobind Khorana, 1968 Nobel Winner for RNA Research, Dies 2011-11-14T05:25:43Z Some people think the first self-duplicating molecule was a protein, but other people think it might be nucleic acid. Biochemistry without boundaries 2011-10-12T17:20:58.527Z But researchers from North America, the U.K. and Australia extracted fragments of nucleic acids from three mammoth specimens, creating hemoglobin based on its coding DNA sequence. Mammoth Hemoglobin Could Provide Cold Comfort 2011-09-20T00:15:05.713Z Our analysis included polymerase chain reaction and reverse transcription polymerase chain reaction procedures for detection of viral nucleic acids and assays for detection of infectious virus and virus-specific antibodies. [Report] No Evidence of Murine-Like Gammaretroviruses in CFS Patients Previously Identified as XMRV-Infected 2011-07-05T19:26:19Z It's similar to a gene chip in that it can detect many nucleic acid sequences simultaneously, which makes the test both rapid and flexible. Diagnostics: A testing journey 2011-06-13T13:20:42.793Z In 1952, he was recruited to the British Columbia Research Council in Vancouver to join a group working on nucleic acids. H. Gobind Khorana, 1968 Nobel Winner for RNA Research, Dies 2011-11-14T05:25:43Z Our data show evidence for arsenate in macromolecules that normally contain phosphate, most notably nucleic acids and proteins. [Research Article] A Bacterium That Can Grow by Using Arsenic Instead of Phosphorus 2011-06-02T18:26:22.637Z To examine the incorporation of As in biomolecules, we extracted nucleic acids from cells. [Technical Response] Response to Comments on ?A Bacterium That Can Grow Using Arsenic Instead of Phosphorus? 2011-06-02T18:25:46.820Z In the 1950s, Francis Crick, the co-discoverer of the structure of DNA, was still putting “information” in quotation marks when describing how one protein copied a sequence of nucleic acids from another. James Gleick?s History of Information 2011-03-18T22:10:16Z Our results reveal an unsuspected role for neutrophils in SLE pathogenesis and identify a novel link between nucleic acid–recognizing antibodies and type I IFN production in this disease. [Research Articles] Netting Neutrophils Are Major Inducers of Type I IFN Production in Pediatric Systemic Lupus Erythematosus 2011-03-09T19:55:09.460Z Chemical analysis of the meteorite shows it to be rich in the gas ammonia, which contains the element nitrogen - found in the amino and nucleic acids which form the basis of life. Meteorite 'may have sparked life' 2011-02-28T22:34:20Z Stationary phase cells incorporated approximately of the total intracellular AsO label into nucleic acids but more than three quarters of the AsO into the phenol extracted “protein” fraction, with a small fraction going into lipids. [Research Article] A Bacterium That Can Grow by Using Arsenic Instead of Phosphorus 2011-06-02T18:26:22.637Z After Francis Crick and James Watson showed that DNA is the basis for genetic transmission in the 1950s, many researchers began to favor nucleic acids over proteins as the ur-molecules. Pssst! Don't tell the creationists, but scientists don't have a clue how life began 2011-02-28T19:45:03.540Z Yet there was a small stretch of nucleic acids on chromosome 19 that he preferred to leave uncovered, a region that coded the apolipoprotein E gene. Neurostress: How Stress May Fuel Neurodegenerative Diseases 2011-02-01T12:15:00.243Z The researchers found that it underwent both recombination, in which the DNA shuffles around, and base substitutions, in which individual nucleic acids in a DNA sequence change. Observatory: With Sleight of DNA, Pneumonia Bacterium Dodges Vaccines 2011-01-28T18:07:22Z They tested 3,151 people seeking HIV testing at sites in San Diego County using both the nucleic acid test and the rapid test. Sensitive test spots newest HIV infections 2010-06-17T20:14:00Z They tested more than 3,100 people seeking HIV testing at sites in San Diego County using both the nucleic acid test and the rapid test. Sensitive test spots newest HIV infections 2010-06-16T18:51:00Z It would be the modern equivalent of a message in a bottle, with the message being encoded digitally in nucleic acid and the bottle being a living, replicating cell. Is Anybody Out There? 2010-04-10T03:18:00Z With E. S. London, he introduced a solution of nucleic acid into, e.g., the gastrointestinal segment of a dog through a gastric fistula and withdrew the product of digestion through an intestinal fistula. History of Phosphorus The nuclei of cells are composed almost wholly of complex organic salts, in which proteins constitute the basic part and nucleic acids the acid part. The Chemistry of Plant Life In spite of quick healing of muscle and flesh from the amino and nucleic acid powders the doctor had packed in, the shoulder ached with a tightness that spoiled his coordination. The Man Who Staked the Stars A certain degree of non-specific immunity or increased tissue resistance may be produced locally, e.g. in the peritoneum, by injections of non-pathogenic organisms, peptone, nucleic acid and various other substances. Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 2 "Baconthorpe" to "Bankruptcy" We will show, I hope, fairly conclusively that there is little or no interconversion between the two types of nucleic acid synthesis in the cell. On Handling the Data The nucleic acids vary with the source of the proteids, there being considerable differences in chemical composition. The Project Gutenberg Encyclopedia Volume 1 of 28 The nucleic acids are complex compounds consisting of a carbohydrate, phosphoric acid, two purine bases, and two pyrimidine bases. The Chemistry of Plant Life From their structure and properties, it is apparent that nucleic acids are on the border line between carbohydrates, plant amines, and proteins. The Chemistry of Plant Life Combined with the nucleic acids, they comprise the nucleus of the cell, which is the seat of the power of cell-division and, hence, of the growth of the organism. The Chemistry of Plant Life The synthesis of both types of nucleic acid are independent of each other. On Handling the Data I’m anxious to buckle down and really lick this nucleic acid problem … in time for a June degree. On Handling the Data Solutions of nucleic acids are optically active, probably because of the carbohydrate constituents. The Chemistry of Plant Life |
| 随便看 |
英语例句辞典收录了117811条英语例句在线翻译词条，基本涵盖了全部常用单词及词组的例句翻译及用法，是英语学习的有利工具。