What is the function of vitamin biotin?
A large part of the human requirement for biotin is met by the synthesis from intestinal bacteria, and so a biotin deficiency is usually not caused by simple dietary deficiency, but by defects in utilization. Biotin functions as a component of specific enzymes that are involved in carboxylase reactions as a carboxyl carrier, reactions that are common to many metabolic pathways such as gluconeogenesis, fatty acid synthesis and the citric acid cycle.
