-ENZREV 2.6.1.1 -ENZIRREV 1.14.18.1 2.6.1.1 -METINT o-Diphenol o-quinone L-Tyrosine dopaquinone Monophenol o-diphenol L-Aspartate 2-oxoglutarate oxaloacetate L-glutamate -METEXT O2 H2O L-dopa -CAT 1.14.18.1 : 2 o-Diphenol + O2 = 2 o-quinone + 2 H2O . 1.14.18.1 : L-Tyrosine + L-dopa + O2 = L-dopa + dopaquinone + H2O . 1.14.18.1 : Monophenol + O2 = o-diphenol + H2O . 2.6.1.1 : L-Aspartate + 2-oxoglutarate = oxaloacetate + L-glutamate