>TIGR02360 pbenz_hydroxyl 4-hydroxybenzoate 3-monooxygenase; InterPro: IPR012733 4-hydroxybenzoate 3-monooxygenase is a flavoprotein that converts its substrate to 3,4-dihydroxybenzoate, which subsequently enters the beta-ketioadipate pathway of aromatic degradation, using molecular oxygen and NADPH as shown below . 4-hydroxybenzoate + NADPH + O(2) = 3,4-dihydroxybenzoate + NADP(+) + H(2)O 4-hydroxybenzoate is an intermediate in the degradation of lignin and other aromatic plant compounds, and this enzyme is found extensively in soil bacteria. This enzyme is a homodimer where each subunit is composed of three distinct domains: an N-terminal flavin-binding domain with a beta-alpha-beta fold, a small substrate-binding domain composed of a single alpha helix and beta-sheet, and a C-terminal helical domain . The active site is found at the interface of all three domains. Catalysis occurs by a two-step reaction. In the first step, flavin is reduced by NADPH. Subsequently, the reduced flavin is oxygenated to a hydroperoxide which transfers the hydroxyl group to the substrate, forming 3,4-dihydroxybenzoate.; GO: 0018659 4-hydroxybenzoate 3-monooxygenase activity, 0050660 FAD binding, 0043639 benzoate catabolic process.

Probab=90.96  E-value=0.56  Score=26.06  Aligned_cols=37  Identities=30%  Similarity=0.478  Sum_probs=29.9

Q ss_pred             CCCCCEEEEECCCHHHHHHHHHHHHCCCCEEEEEECCHH
Q ss_conf             988877999778878999999999779981899944989
Q gi|254781039|r    1 MKNYSTIFVIGAGAFGTALSSVIASRGLANVTLLGRKEI   39 (329)
Q Consensus         1 M~~~~kI~ViGaGa~GtAlA~~La~~g~~~V~l~~r~~~   39 (329)
T Consensus         1 MkT--qVaIiG~GPsGLLLGQLLh~~GId~viLEr~~~d   37 (393)
T TIGR02360         1 MKT--QVAIIGAGPSGLLLGQLLHKAGIDTVILERKSRD   37 (393)
T ss_pred             CCE--EEEEECCCHHHHHHHHHHHHCCCCEEEEECCCHH
T ss_conf             951--7999757735789999998669858997235722