GENERAL KNOWLEDGE

Detailed explanation-1: -Structure of cobalamin (vitamin B12). The core component of cobalamin is the corrin ring, which houses a central cobalt ion. The corrin ring together with the cobalt is called cobyric acid.

Detailed explanation-2: -Cobalt, as a trace element, is essential for rumen microorganisms for the formation of vitamin B12. In the metabolism of mammals, vitamin B12 is an essential part of two enzymatic systems involved in multiple metabolic reactions, such as in the metabolism of carbohydrates, lipids, some amino acids and DNA.

Detailed explanation-3: -Vitamin B12 Vitamin B12 is the only known biomolecule with a stable carbon-metal bond-it is an organometallic compound. The core of the molecule is a corrin ring with various attached sidegroups.

Detailed explanation-4: -Vitamin B12 is the most chemically complex of all the vitamins. The structure of B12 is based on a corrin ring, which is similar to the porphyrin ring found in heme. The central metal ion is cobalt.