Vitamin B12 cobalamin
Vitamin B12, also called cobalamin, is a water-soluble vitamin that has a key role in the normal functioning of the brain and nervous system, and the formation of red blood cells. It is one of eight B vitamins. It is involved in the metabolism of every cell of the human body, especially affecting DNAsynthesis, fatty acid and amino acid metabolism.[1] No fungi, plants, nor animals (including humans) are capable of producing vitamin B12. Only bacteriaand archaea have the enzymes needed for its synthesis. Proved sources of B12 are animal products (meat, fish, dairy products) and supplements. Some research states that certain non-animal products possibly can be a natural source of B12 because of bacterial symbiosis. B12 is the largest and most structurally complicated vitamin and can be produced industrially only through a bacterial fermentation-synthesis. This synthetic B12 is used to fortify foods and sold as a dietary supplement.
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