>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=99.65 E-value=3.5e-14 Score=117.46 Aligned_cols=325 Identities=18% Similarity=0.188 Sum_probs=191.6 Q ss_pred CCCCEEEECCCHHHHHHHHHHHHCCCCCEEEEEECCCCCCCCCCC---CCEECHHHHHHHCCCHHHHCCCC--CCC-EEE Q ss_conf 364779998976899999999980899739999786778986402---74033367888678726414885--432-243 Q gi|254781024|r 13 FEYDVVIIGAGPAGLAAAIRCKQINPHLSVVILEKSAEVGAHILS---GAIIDPIGIDSLLPRWREDKGHP--FHT-VVK 86 (554) Q Consensus 13 meyDVvIVGaGPAG~saA~~La~~g~~l~VlvlEK~~~pG~~i~s---G~vl~p~aL~eL~Pd~~e~~g~p--l~~-~v~ 86 (554) T Consensus 1 MkTqVaIiG~GPsGLLLGQLLh~~G--Id~viLEr~~~--dYVlgRIRAGvLE~g~v-~LL----~~agv~~Rm~~eG~~ 71 (393) T TIGR02360 1 MKTQVAIIGAGPSGLLLGQLLHKAG--IDTVILERKSR--DYVLGRIRAGVLEQGTV-DLL----REAGVDERMDREGLV 71 (393) T ss_pred CCEEEEEECCCHHHHHHHHHHHHCC--CCEEEEECCCH--HHHHHHHCCCHHHHHHH-HHH----HHHHHHHHHHHCCCC T ss_conf 9517999757735789999998669--85899723572--23433210123578999-999----872232234535873 Q ss_pred EEEEEEECCCCCEECCCCCCCCCCCCCCCE--EEEHHHHHHHHHHHHHHCCCEECCCCEEEEEEECCCCCE--EEEEECC Q ss_conf 669999779976773654356544678826--888889899999999874953306822434776277620--1454124 Q gi|254781024|r 87 RDLYWFLNAQRSIQIPHFCLPDFMDNKEHY--IVSLGQVCRWLKNKAEALGVEIYCGFTATEIYYGKKGEA--LGILTGE 162 (554) Q Consensus 87 ~d~~~~l~~~~~~~~p~~~~p~~~~~~g~y--iv~r~~fd~~L~~~Ae~~Gvei~~g~~v~~i~~~e~g~v--vgv~t~~ 162 (554) T Consensus 72 H~G~~ia~~g~~~riDl~~-----~tGG~~V~VYGQTEvtrDL~~ARe~~G~~~v~~a~~V~~HD~~~~~P~gc~VT~~~ 146 (393) T TIGR02360 72 HEGIEIAFDGQRFRIDLKA-----LTGGKTVMVYGQTEVTRDLYEAREQAGLKTVYDADDVRLHDLAGDRPEGCHVTFER 146 (393) T ss_pred CCCEEEECCCCEEECCHHH-----HCCCCEEEEECCHHHHHHHHHHHHHCCCCEEEECCCCCCCCCCCCCCCCCEEEEEE T ss_conf 2565450178242000766-----05897899976615778899999863895564114321126567888952587778 Q ss_pred CCCCCCCCCCCCCCCEEEEEEEEEEEECCCCCHHHHHHHHHCCCCCCCCHHHHH-HHHHHHHHHCCCCCCCCEEEEEECC Q ss_conf 324434665787563026774257860664432554211224899888898998-8988887516566788808995043 Q gi|254781024|r 163 KGKNYDGTQGKHYIAPMLLLSKYMLVGEGACGSLTRQLIERYSLMDGRQPQKFG-LGIKELWKIKPQYHRRGLALHSIGW 241 (554) Q Consensus 163 ~G~~k~~~~~~~~~~g~~i~Ak~vI~AdG~~s~lak~l~~~~~l~~~~~p~~~~-~gvke~~ei~~~~~~~G~~~h~~g~ 241 (554) T Consensus 147 dG~------------~~~~dCDfIAGCDGFHGvSR~siP~~-~~k~fErVYPFGWLGi--LsetPPv~~ELIY~~h~RGF 211 (393) T TIGR02360 147 DGE------------EHRIDCDFIAGCDGFHGVSRASIPAE-VLKEFERVYPFGWLGI--LSETPPVSHELIYSNHERGF 211 (393) T ss_pred CCC------------EEEEEEEEEECCCCCCCCCCCCCCHH-HHHCCCCCCCCCCHHH--HCCCCCCCCCCCCCCCCCCH T ss_conf 791------------77764026752788868654456512-4111245067620012--05786886444103676302 Q ss_pred CCCCCCCCCEEEEECCCCEEEEEEEECC-CCCCCCC--CHHHHHHHHHHCCCHHHHHCCCCEECCCCEECCCCCCCCCCC Q ss_conf 4768766412576647980599998326-6656688--988999998608004565038826303513400542124874 Q gi|254781024|r 242 PLDMNTSGGGFVYHFDDNLVSIGFVLHL-DYRNPWI--SAYEELQRFKTHPDIRIIFTEGERLEYGARVISEGGWQSVPK 318 (554) Q Consensus 242 ~~~~~~~gggwiy~~~d~~~~iG~v~~l-d~~~~~~--~~~~~lq~fk~hp~i~~~l~gg~~~~yga~~ip~gg~~s~pk 318 (554) T Consensus 212 ALCSm---------RS~~rSRYY~Q~pL~D~vedWSDd~FW~ELK~R-lp~e~A~~LvTGPSiEKSIA--PLRSFV~EP- 278 (393) T TIGR02360 212 ALCSM---------RSETRSRYYVQVPLTDKVEDWSDDRFWEELKRR-LPEEAAERLVTGPSIEKSIA--PLRSFVAEP- 278 (393) T ss_pred HHHHH---------CCCCCCCEEEEECCCCCCCCCCHHHHHHHHHHC-CCHHHHHHCCCCCCCHHHCC--CCCCCCCCC- T ss_conf 45532---------036567358871456887788707789998613-78668754056764122116--787743386- Q ss_pred CCCCCEEEECCCCCCCCCCCCCCHHHHHHHHHHHHHHHHHHHHCCCCCCCHHHH-HHHHHHHH Q ss_conf 230887996123233136643522689999999999999987458865303678-99864204 Q gi|254781024|r 319 LSFPGGSLIGCAAGFVNLLRIKGSHNAIISGMLAAEKIVERLSNGKKHDDPIEI-EDSWRQTQ 380 (554) Q Consensus 319 ~~~~g~lLvGDAAG~vnP~~g~GI~~Am~SG~lAAEai~eal~~g~~~~~l~~Y-e~~~~~s~ 380 (554) T Consensus 279 M~yGrLFLaGDAAHIVPPTGAKGLN~AASD~~yL~~aL~~~Y~~~~~-~gi~~YSa~aLaRvW 340 (393) T TIGR02360 279 MRYGRLFLAGDAAHIVPPTGAKGLNLAASDVHYLYEALLEHYQEGDS-AGIDGYSAKALARVW 340 (393) T ss_pred CCCCCHHHHCCCCCCCCCCCCCHHHHHHHHHHHHHHHHHHHHCCCCH-HHHHHHHHHHHHHHH T ss_conf 52465111046443588876221034888999999999997302216-577889999963332

HHsearch alignment for GI: 254781024 and conserved domain: TIGR02360