In addition, iron is also an important part of proteins like myoglobin, which delivers and stores oxygen in muscles; and mitochondrial enzymes like cytochrome oxidase, which help generate ATP.

此外，铁也是某些蛋白质的重要组成部分，如肌红蛋白；肌红蛋白在肌肉组织内起转运和贮存氧的作用；铁还是线粒体酶的组成部分，如辅助产生ATP的细胞色素氧化酶。