>TIGR01988 Ubi-OHases Ubiquinone biosynthesis hydroxylase, UbiH/UbiF/VisC/COQ6 family; InterPro: IPR010971 This entry represents a family of FAD-dependent hydroxylases (monooxygenases) which are all believed to act in the aerobic ubiquinone biosynthesis pathway . A separate set of hydroxylases, as yet undiscovered, are believed to be active under anaerobic conditions . In Escherichia coli, three enzyme activities have been described: UbiB (which acts first at position 6, see IPR010232 from INTERPRO), UbiH (which acts at position 4, ) and UbiF (which acts at position 5, ). UbiH and UbiF are similar to one another and form the basis of this subfamily. Interestingly, E. coli contains another hydroxylase gene, called visC, that is highly similar to UbiF, adjacent to UbiH and, when mutated, results in a phenotype similar to that of UbiH (which has also been named visB) . Several other species appear to have three homologs in this family, although they assort themselves differently on phylogenetic trees (e.g. Xylella and Mesorhizobium) making it difficult to ascribe a specific activity to each one. Eukaryotes appear to have only a single homologue in this subfamily (COQ6, ) which complements UbiH, but also possess a non-orthologous gene, COQ7 which complements UbiF.; GO: 0016709 oxidoreductase activity acting on paired donors with incorporation or reduction of molecular oxygen NADH or NADPH as one donor and incorporation of one atom of oxygen, 0050660 FAD binding, 0006744 ubiquinone biosynthetic process.

Probab=97.65 E-value=5.6e-05 Score=54.74 Aligned_cols=197 Identities=11% Similarity=0.097 Sum_probs=96.4 Q ss_pred CCCCCCCCCCCC---CCCCCCHHHHHHHCC-----CCCCEEEEEEECCCCCC---CEEEEEEECCCCEEEECCCCCEEEE Q ss_conf 122222222222---223220023442014-----68721699972133211---0000023204531210367840000 Q gi|254781053|r 218 AAHCLKIMSKQG---MNFQLNSKVSSVKKV-----KGKAQVVYRSTDDEPIN---IEADAVLVAAGRRPYTKGLGLEEIG 286 (466) Q Consensus 218 ~~~~~~~l~~~g---V~i~~~~~v~~i~~~-----~~~~~v~~~~~~g~~~~---i~~D~vl~a~G~~Pn~~~l~Le~~g 286 (466) T Consensus 126 ~~aL~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~v~~~L~~G----~~~~~l~a~LlvgADG~~S~vR----~~~g 197 (445) T TIGR01988 126 QQALWEALQELPNEKVTLLCPARVEELPRHSSKNDSDEVELTLSDG----RQKLLLRARLLVGADGANSKVR----QLAG 197 (445) T ss_pred HHHHHHHHHHCCCCEEEEECCCEEEEEECCCCCCCCCCEEEEECCC----CEEEEEEECEEEEECCCCHHHH----HHHC T ss_conf 9999999996689647751672147740367756886079997089----4767898532787358652579----9718 Q ss_pred CCCCCCCCCCCCCCCEEECCCCEEECCCCCCCCCCCEECCCCCCEEECCC--CCCC---CCCC--CCCCCCEEEHH-HHH Q ss_conf 12676422333776333026848702433354344300012320120111--2222---2223--33322100014-455 Q gi|254781053|r 287 INIDHRGCIEIGGQFQTSISTIYAIGDVVRGPMLAHKAEDEGIAVAEIIS--GQKG---HVNY--GIIPSVVYTHP-EVA 358 (466) Q Consensus 287 i~~~~~G~I~vd~~~~Ts~p~IyA~GDv~g~~~l~~~A~~~g~~aa~~i~--~~~~---~~~~--~~ip~~vft~p-eia 358 (466) T Consensus 198 I~~~~~-----R~Y~Q~a~--------Va~v---~~-~~~h~~~A~erF~~~~GP~AlLPL~~~dd~~~slVW~~~~~~A 260 (445) T TIGR01988 198 IPTTGW-----RDYGQSAV--------VANV---KH-ERPHQGTAWERFLPDTGPLALLPLPDNDDNRSSLVWTLPPEEA 260 (445) T ss_pred CCCCEE-----ECCCCEEE--------EEEE---EE-CCCCCCEEEEEEECCCCCEEECCCCCCCCCEEEEEEECCHHHH T ss_conf 884301-----16455389--------9999---71-4788964799982799857873588888960389973897999 Q ss_pred H--HHHCHHHHHH---CCCCEEEE----------------------------EEEECCCCHH------HHCCCCCEEEEE Q ss_conf 1--0014788862---34665899----------------------------9960447034------418898338999 Q gi|254781053|r 359 S--IGKTEEQLKC---EKKSYKVG----------------------------KFPFSANGRA------RSMNSIDGFVKI 399 (466) Q Consensus 359 ~--vGlte~~a~~---~~~~~~v~----------------------------~~~~~~~~ra------~~~~~~~g~~kl 399 (466) T Consensus 261 ~~L~~l~~~~F~~~L~~~F~~~lG~~~~~~~~~~~l~~~~~~~~~~~~pp~~~~~~~~~R~~fPL~~~~A~~yv~~R~aL 340 (445) T TIGR01988 261 ERLLALDDEEFLAELNRAFGSRLGDLPYLDQTDFALNELFFRSSEEQYPPLGAITLVGERAAFPLSLRHAKRYVAPRLAL 340 (445) T ss_pred HHHHCCCHHHHHHHHHHHHHHHCCCCCHHHHHHHHHHHHHHHHHCCEECCCEEEEECCCCCCCCCHHHHHHHHHCCCEEE T ss_conf 99867899899999999853315796556789999999873202440068237887687630440334358762598589 Q ss_pred EEECC-CCEEEEEEEEC---CCHHHHHHHHHHHHHCCCCHHHHH Q ss_conf 99789-98699999982---998899999999998789878996 Q gi|254781053|r 400 LANEK-SDRVEGVHIIG---GSAGEMIHEAAVLMEFGGSSEDLA 439 (466) Q Consensus 400 i~~~~-~~~ilG~~~vg---~~a~eli~~~a~ai~~~~t~~~l~ 439 (466) T Consensus 341 iGDAAHt~HPlAGQG~NLG~rDv~~La~~l~~a~~~g~DiG~~~ 384 (445) T TIGR01988 341 IGDAAHTVHPLAGQGLNLGLRDVAALAEVLVEARRRGEDIGSLA 384 (445) T ss_pred EECCCCCCCCCCCCCCCCCHHHHHHHHHHHHHHHHCCCCCCCHH T ss_conf 80541357871001002007899999999999884566857777

HHsearch alignment for GI: 254781053 and conserved domain: TIGR01988