6-HYDROXYDOPA AMMONIA ASCORBATE ATP BILE SALTS BIOTIN CADMIUM CALCIUM COBALAMIN COBALT COENZYME-A COPPER DIPYRROMETHANE DITHIOTHREITOL DIVALENT CATION F420 FAD FE(2+) FLAVIN FLAVOPROTEIN FMN GLUTATHIONE HEME HEME-THIOLATE IRON IRON-MOLYBDENUM IRON-SULFUR LIPOYL GROUP MAGNESIUM MANGANESE MOLYBDENUM MONOVALENT CATION NAD NAD(+) NAD(P)H NADH NICKEL NON-HEME IRON POTASSIUM PQQ PROTOHEME IX PTERIN PYRIDOXAL-PHOSPHATE PYRUVATE REDUCED FLAVIN REQUIRES A UNIVALENT CATION SELENIUM SIROHEME SODIUM TETRAHYDROPTERIDINE THIAMIN PYROPHOSPHATE TRYPTOPHAN TRYPTOPHYLQUINONE (TTQ) TUNGSTEN VANADIUM ZINC