5,10-methenyltetrahydrofolate 5,6,7,8-tetrahydrobiopterin 5,6,7,8-tetrahydropteridine adenosylcob(III)alamin Ascorbate Biotin Ca(2+) Co(2+) CoA cobalt cation Cob(II)alamin Coenzyme F430 Copper atom Cu(+) Cu(2+) Cu cation Dipyrromethane Divalent cation Divalent metal cation FAD FADH(2 Fe(2+) Fe(3+) Fe cation Ferriheme b Flavin Flavoprotein FMN FMNH(2 Glutathione Heme Heme b Heme c Heme-thiolate Iron-sulfur K(+) L-ascorbate Metal ions Methyl(III)cobalamin Mg(2+) MIO Mn(2+) Mo-bis(molybdopterin guanine dinucleotide Mo-bis(molybdopterin guanine dinucleotide) Mo cation Molybdenum atom Molybdopterin Molybdopterin cytosine dinucleotide Molybdopterin guanine dinucleotide Mo-molybdopterin Monovalent cation Na(+) NAD(+) NADH NADP(+) NADPH NH(4)(+) Ni(2+) Prenyl-FMNH(2 Pyridoxal 5'-phosphate Pyrroloquinoline quinone Pyruvate Riboflavin S-adenosyl-L-methionine Se(2+) Siroheme Thiamine diphosphate Thiamine phosphate Tryptophan tryptophylquinone Tungstopterin Vanadium cation W cation Zn(2+)