ID 1.13.11.8 DE Protocatechuate 4,5-dioxygenase. AN Protocatechuate 4,5-oxygenase. CA Protocatechuate + O(2) = 4-carboxy-2-hydroxymuconate semialdehyde. CF Iron. CC -!- Formerly EC 1.13.1.8. DR P22635, PCYA_PSEPA ; P22636, PCYB_PSEPA ; //