>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=90.46 E-value=0.098 Score=31.63 Aligned_cols=75 Identities=12% Similarity=0.202 Sum_probs=37.5 Q ss_pred CCCCCCCCCCCCCCCCCCEEEECC---CCC-CCCEEEE-ECCC--CCCCCCCEECCCCEEEECCCCCCCCCCCCCCCCCC Q ss_conf 222222222233233220001102---445-7610243-1275--32222100001522200126841123211235433 Q gi|254781055|r 213 QGLTDVMISRGMQVFHNDTIESVV---SES-GQLKSIL-KSGK--IVKTDQVILAVGRTPRTTGIGLEKVGVKMDENGFI 285 (461) Q Consensus 213 ~~~~~~l~~~Gv~i~~~~~v~~i~---~~~-~~~~~~~-~~g~--~~~~D~vl~a~Gr~Pn~~~l~L~~~gi~~~~~G~i 285 (461) T Consensus 107 rDL~~ARe~~G~~~v~~a~~V~~HD~~~~~P~gc~VT~~~dG~~~~~dCDfIAGCDGFH-----------GvS---R~si 172 (393) T TIGR02360 107 RDLYEAREQAGLKTVYDADDVRLHDLAGDRPEGCHVTFERDGEEHRIDCDFIAGCDGFH-----------GVS---RASI 172 (393) T ss_pred HHHHHHHHHCCCCEEEECCCCCCCCCCCCCCCCCEEEEEECCCEEEEEEEEEECCCCCC-----------CCC---CCCC T ss_conf 88999998638955641143211265678889525877787917776402675278886-----------865---4456 Q ss_pred CCCCCCCCCEEEEEEECC Q ss_conf 445743000035587125 Q gi|254781055|r 286 ITDCYSRTNVQSIFSLGD 303 (461) Q Consensus 286 ~vd~~~~Ts~~~IyA~GD 303 (461) T Consensus 173 P~~-~~k~-fErVYPFGW 188 (393) T TIGR02360 173 PAE-VLKE-FERVYPFGW 188 (393) T ss_pred CHH-HHHC-CCCCCCCCC T ss_conf 512-4111-245067620

HHsearch alignment for GI: 254781055 and conserved domain: TIGR02360