>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=99.97 E-value=7.9e-31 Score=229.94 Aligned_cols=323 Identities=20% Similarity=0.254 Sum_probs=226.4 Q ss_pred EECCHHHHHHHHHHHHHCCCEEEEEECCCC---CCCCCCEEEECHHHHHHHHHCCCHHHHHHCCCCCCCEEEEECCCCCC Q ss_conf 877538999999999977985999956876---55577136678889999998899478986268843069997885443 Q gi|254780168|r 2 IIGAGISGLTLAASLGHRGIQSCVLEKKDQ---LSDSGFGIQISPNASRILKRIGILDQLEDIWIEPEDFVFRSGSTLKE 78 (380) Q Consensus 2 IvGaG~aGl~~A~~L~~~G~~v~i~Er~~~---~~~~g~gi~l~p~~~~~L~~lGi~~~~~~~~~~~~~~~~~~~~~~~~ 78 (380) T Consensus 7 IiG~GPsGLLLGQLLh~~GId~viLEr~~~dYVlgRIRAGv-LE~g~v~LL~~agv~~Rm~~eG~~H~G~~ia~~g~~~- 84 (393) T TIGR02360 7 IIGAGPSGLLLGQLLHKAGIDTVILERKSRDYVLGRIRAGV-LEQGTVDLLREAGVDERMDREGLVHEGIEIAFDGQRF- 84 (393) T ss_pred EECCCHHHHHHHHHHHHCCCCEEEEECCCHHHHHHHHCCCH-HHHHHHHHHHHHHHHHHHHHCCCCCCCEEEECCCCEE- T ss_conf 97577357899999986698589972357223433210123-5789999998722322345358732565450178242- Q ss_pred CCCCCCCCCCCCCCCCEEEEEECCHHHHHHHHHHHHCCCEEEEEEECCCC------CC---CCCCC-CCC--CEEEEEEE Q ss_conf 33455432344447824786200013478899732068725642101234------43---21123-453--10356899 Q gi|254780168|r 79 LSRFSCKNYSRNNWGGIYGVVKRHTLQKILLNHIQTQPLARLHLSTHITH------PD---CTQIS-KIN--NQKPDLLV 146 (380) Q Consensus 79 ~~~~~~~~~~~~~~~~~~~~i~r~~l~~~L~~~~~~~~~~~~~~~~~v~~------~~---~~~~~-~~~--~~~adlvI 146 (380) T Consensus 85 --riDl~~~tG---G~~V~VYGQTEvtrDL~~ARe~~G~~~v~~a~~V~~HD~~~~~P~gc~VT~~~dG~~~~~dCDfIA 159 (393) T TIGR02360 85 --RIDLKALTG---GKTVMVYGQTEVTRDLYEAREQAGLKTVYDADDVRLHDLAGDRPEGCHVTFERDGEEHRIDCDFIA 159 (393) T ss_pred --ECCHHHHCC---CCEEEEECCHHHHHHHHHHHHHCCCCEEEECCCCCCCCCCCCCCCCCEEEEEECCCEEEEEEEEEE T ss_conf --000766058---978999766157788999998638955641143211265678889525877787917776402675 Q ss_pred EECCCCCCCHHHCCCCCC-CCCCC--EEEEEECCCCCCCCCCCCCCEEEEECCCCEEEEEEECCCC-EEEEEEEECCCCC Q ss_conf 743676631211285334-43110--1578603654465545667608997654057888404897-3799998457742 Q gi|254780168|r 147 GADGLNSNIRHYIDTQPI-TFSGD--VVLRCLIPQNNAPEFIDFQSVNIFFGPDSHLVTYPLREDN-TINMVFVSSKHTL 222 (380) Q Consensus 147 gADG~~S~vR~~l~~~~~-~~~~~--~~~~~~i~~~~~~~~~~~~~~~~~~~~~~~~~~~p~~~~~-~~~~~~~~~~~~~ 222 (380) T Consensus 160 GCDGFHGvSR~siP~~~~k~fErVYPFGWLGiLset--PP-v~~E--LIY~~h~RGFALCSmRS~~rSRYY~Q~pL~D~v 234 (393) T TIGR02360 160 GCDGFHGVSRASIPAEVLKEFERVYPFGWLGILSET--PP-VSHE--LIYSNHERGFALCSMRSETRSRYYVQVPLTDKV 234 (393) T ss_pred CCCCCCCCCCCCCCHHHHHCCCCCCCCCCHHHHCCC--CC-CCCC--CCCCCCCCCHHHHHHCCCCCCCEEEEECCCCCC T ss_conf 278886865445651241112450676200120578--68-8644--410367630245532036567358871456887 Q ss_pred CCCCCCCCCCCCHHHHHHHHHHC-CCCCCEEEECCC--CCCCCCCCCCCCCCCCCCCCEEECHHHCCCCCCCHHHHHCCC Q ss_conf 11123455322238989863212-802220110023--321012334654210146871121111124483033420130 Q gi|254780168|r 223 KDISFLKRSEIHKEWFVKHLTNW-HQEIIQLILQIN--DTHLYPLFECECKHWHNKKNAVLIGDAAHTLLPFAAQGANMA 299 (380) Q Consensus 223 ~~~~~~~~~~~~~~~~~~~~~~~-~~~~~~~i~~~~--~~~~~~l~~~~~~~~~~~~rv~LiGDAAH~~~P~~GqG~n~a 299 (380) T Consensus 235 edWSD--------d~FW~ELK~Rlp~e~A~~LvTGPSiEKSIAPLRSF-V~EPM~yGrLFLaGDAAHIVPPTGAKGLN~A 305 (393) T TIGR02360 235 EDWSD--------DRFWEELKRRLPEEAAERLVTGPSIEKSIAPLRSF-VAEPMRYGRLFLAGDAAHIVPPTGAKGLNLA 305 (393) T ss_pred CCCCH--------HHHHHHHHHCCCHHHHHHCCCCCCCHHHCCCCCCC-CCCCCCCCCHHHHCCCCCCCCCCCCCHHHHH T ss_conf 78870--------77899986137866875405676412211678774-3386524651110464435888762210348 Q ss_pred HHHHHHHHHHHCC---CCHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHC Q ss_conf 3679999998524---898999999999867999999999999889836 Q gi|254780168|r 300 IEDAYALSYLLGK---KTIPAAISAYQKVRAVRVKRIRYRTKLNQLLFH 345 (380) Q Consensus 300 l~Da~~La~~L~~---~~~~~~l~~Y~~~R~~~~~~i~~~s~~~~~~~~ 345 (380) T Consensus 306 ASD~~yL~~aL~~~Y~~~~~~gi~~YSa~aLaRvWKA~RFSWWmT~lLH 354 (393) T TIGR02360 306 ASDVHYLYEALLEHYQEGDSAGIDGYSAKALARVWKAERFSWWMTSLLH 354 (393) T ss_pred HHHHHHHHHHHHHHHCCCCHHHHHHHHHHHHHHHHHHCCCCHHHCCCEE T ss_conf 8899999999999730221657788999996333220043346658310

HHsearch alignment for GI: 254780168 and conserved domain: TIGR02360