Vitamin-dependent metabolic enzyme

Vitamin-dependent metabolic enzymes are a diverse class of enzymes whose catalytic activity depends on binding specific vitamin-derived cofactors (coenzymes), including B-complex vitamins, vitamin C, vitamin D, vitamin K, and biotin[1][3][7]. These enzymes catalyze key reactions in energy metabolism, biosynthesis, redox balance, gene expression, and neurotransmitter production[3][6][4]. Examples include thiamine pyrophosphate-dependent decarboxylases (vitamin B1), flavoproteins using FAD/FMN (vitamin B2), NAD/NADP-dependent enzymes (vitamin B3), pyridoxal phosphate-dependent transaminases (vitamin B6), biotin-dependent carboxylases, and folate-dependent methyltransferases[7][5]. Deficiency or dysfunction of these enzymes can result in metabolic disorders, neurological symptoms, anemia, and other diseases[1][6][7]. Drug interventions may modulate enzyme activity by supplementing vitamins, inhibiting enzymes, or altering cofactor availability. The term does not denote a unique molecular drug target and should be replaced with the specific enzyme name (e.g., "pyruvate carboxylase," "alanine transaminase") for therapeutic purposes.

Other names

Vitamin-dependent enzymeVitamin-cofactor enzymeVitamin-activated enzyme

Mechanism of action can involve cofactor supplementation to restore the function of deficient metabolic pathways, enzyme inhibition to block specific metabolic pathways (e.g., for antibacterial or cancer therapy), or modulation of gene expression or protein folding.