ID 1.13.11.15 DE 3,4-dihydroxyphenylacetate 2,3-dioxygenase. AN homoprotocatechuate 2,3-dioxygenase. AN HPC dioxygenase. CA 3,4-dihydroxyphenylacetate + O2 = 2-hydroxy-5-carboxymethylmuconate CA semialdehyde + H(+). DR Q05353, HPCB_ECOLX ; //