ID 1.13.11.57 DE gallate dioxygenase. CA 3,4,5-trihydroxybenzoate + O2 = (1E)-4-oxobut-1-ene-1,2,4-tricarboxylate CA + 2 H(+). CC -!- The enzyme is a ring-cleavage dioxygenase that acts specifically on CC gallate to produce the keto-tautomer of 4-oxalomesaconate. DR Q88JX5, GALA_PSEPK ; //