Explain about the cyanocobalamin, Biology

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Explain about the Cyanocobalamin (vitamin B12)?

Vitamin B12 (cobalamin, cbl) is a unique vitamin in human nutrition, since its malabsorption leads to the fatal syndrome of pernicious and megaloblastic anaemias with demyelinating lesions of the central nervous system. The structure of vitamin B12 is shown earliar. As you may have noticed, vitamin B12 is the largest of the B complex vitamins. It consists of a corrin ring made up of four pyroles with cobalt at the centre of the ring. There are several vitamin B12-dependent enzymes in bacteria and algae, but no species of plants have the enzymes necessary for vitamin B12 synthesis.


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