The cis double bond in the sidechain gets converted to trans. E. The ring is opened up. B. acts as a free radical scavenger. C. regulates the differentiation of epithelial cells. D. deficiency leads to osteomalacia.
E. deficiency causes sterility in humans.
B. binding to calcium which prevents vitamin K from performing its function. B. the opening up of ring A. C. the isomerization of a double bond in the hydrocarbon sidechain. D. a methylation reaction in ring B. E. two hydroxylation reactions. It is a direct competitive inhibitor of the enzyme that carboxylates the clotting factors. It prevents the absorption of vitamin K from the GI tract.