Multiple metabolic enzymes utilizing B-vitamin-derived cofactors

Multiple metabolic enzymes utilizing B-vitamin-derived cofactors refers to a broad class of proteins that require essential micronutrients from the B-vitamin complex to function as catalysts for vital biochemical reactions [StatPearls: Vitamin B Complex]. These vitamins, including thiamine (B1), riboflavin (B2), niacin (B3), pantothenic acid (B5), pyridoxine (B6), biotin (B7), folate (B9), and cobalamin (B12), are precursors to active cofactors such as TPP, FAD, NAD, CoA, PLP, and THF [Nutrients: B Vitamins and the Brain]. These enzymes are central to primary metabolism, facilitating the citric acid cycle, fatty acid oxidation, and the synthesis of DNA and amino acids [NIH ODS: Folate]. Because these pathways are essential for cell growth and replication, many enzymes in this group are significant therapeutic targets in oncology, immunology, and infectious disease [PubChem: Methotrexate]. For instance, antifolate drugs like methotrexate target dihydrofolate reductase (a B9-dependent enzyme) to treat cancer and autoimmune conditions, while isoniazid interferes with B6-dependent processes to treat tuberculosis [StatPearls: Vitamin B Complex][PubChem: Methotrexate]. Due to their ubiquitous nature in human physiology, pharmacological modulation of these enzymes requires careful management to avoid systemic toxicities and symptoms resembling nutritional deficiencies [Nutrients: B Vitamins and the Brain]. This category represents a functional grouping of targets rather than a single molecular entity, encompassing various families like dehydrogenases, carboxylases, and transferases [Wikipedia: B vitamins].

Other names

B-vitamin dependent enzymesCofactor-dependent metabolic enzymesB-complex dependent enzymesVitamin B-dependent enzymes

Inhibition of specific enzymes through competitive binding with substrates or B-vitamin-derived cofactors, covalent modification of active sites, or interference with cofactor synthesis and activation.