ID 1.13.11.30 DE stizolobinate synthase. CA L-dopa + O2 = 5-(L-alanin-3-yl)-2-hydroxy-cis,cis-muconate 6-semialdehyde CA + H(+). CC -!- The intermediate product undergoes ring closure and oxidation, with CC NAD(P)(+) as acceptor, to stizolobinic acid. //