coenzyme metabolic process water-soluble vitamin metabolic process biotin metabolic process vitamin H metabolism The chemical reactions and pathways involving biotin, cis-tetrahydro-2-oxothieno(3,4-d)imidazoline-4-valeric acid; the (+) enantiomer is very widely distributed in cells and serves as a carrier in a number of enzymatic beta-carboxylation reactions. biological_process vitamin B7 metabolic process biotin metabolism Wikipedia:Biotin GO:0006768 vitamin B7 metabolism vitamin H metabolic process sulfur compound metabolic process drug metabolic process monocarboxylic acid metabolic process cellular amide metabolic process heterocycle metabolic process organic cyclic compound metabolic process organonitrogen compound metabolic process