>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=98.43 E-value=4.9e-07 Score=70.57 Aligned_cols=199 Identities=17% Similarity=0.242 Sum_probs=111.4 Q ss_pred CCCCCCCCCCCCC---CCCCCCCEEEECCCC-----CCCCEEEEECCCC---CCCCCCEECCCCEEEECCCCCCCCCCCC Q ss_conf 1222222222223---323322000110244-----5761024312753---2222100001522200126841123211 Q gi|254781055|r 211 IRQGLTDVMISRG---MQVFHNDTIESVVSE-----SGQLKSILKSGKI---VKTDQVILAVGRTPRTTGIGLEKVGVKM 279 (461) Q Consensus 211 ~~~~~~~~l~~~G---v~i~~~~~v~~i~~~-----~~~~~~~~~~g~~---~~~D~vl~a~Gr~Pn~~~l~L~~~gi~~ 279 (461) T Consensus 125 ~~~aL~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~v~~~L~~G~~~~~l~a~LlvgADG~~S~vR----~~~gI~~ 200 (445) T TIGR01988 125 LQQALWEALQELPNEKVTLLCPARVEELPRHSSKNDSDEVELTLSDGRQKLLLRARLLVGADGANSKVR----QLAGIPT 200 (445) T ss_pred HHHHHHHHHHHCCCCEEEEECCCEEEEEECCCCCCCCCCEEEEECCCCEEEEEEECEEEEECCCCHHHH----HHHCCCC T ss_conf 999999999966896477516721477403677568860799970894767898532787358652579----9718884 Q ss_pred CCCCCCCCCCCCCCCEEEEEEECCCCCCCCCCCHHHCCCCCCHHHHCC-CCCC--CCCC---CCCCCCEEEHH-HHH--H Q ss_conf 235433445743000035587125432643100000011110122058-8754--3323---33333123068-875--5 Q gi|254781055|r 280 DENGFIITDCYSRTNVQSIFSLGDISGHIQLTPVAIHAAACFVETVFK-DNPT--IPDY---DLVPTAVFSKP-EIA--S 350 (461) Q Consensus 280 ~~~G~i~vd~~~~Ts~~~IyA~GDv~g~~~l~~~A~~~g~~aa~~i~~-~~~~--~~~~---~~ip~~ift~p-eiA--~ 350 (461) T Consensus 201 ~~~-----R~Y~Q~a~--------Va~----v~~~~~h~~~A~erF~~~~GP~AlLPL~~~dd~~~slVW~~~~~~A~~L 263 (445) T TIGR01988 201 TGW-----RDYGQSAV--------VAN----VKHERPHQGTAWERFLPDTGPLALLPLPDNDDNRSSLVWTLPPEEAERL 263 (445) T ss_pred CEE-----ECCCCEEE--------EEE----EEECCCCCCEEEEEEECCCCCEEECCCCCCCCCEEEEEEECCHHHHHHH T ss_conf 301-----16455389--------999----9714788964799982799857873588888960389973897999998 Q ss_pred HCCCHHHHHH----C----CC----------------------------CEEE-EEEEECCCHHHHHCCCCCEEEEEEEE Q ss_conf 1689889985----4----99----------------------------4799-99830313668747998407999997 Q gi|254781055|r 351 VGLTEEEAVQ----K----FC----------------------------RLEI-YKTKFFPMKCFLSKRFEHTIMKIIVH 393 (461) Q Consensus 351 VG~te~~a~~----~----~~----------------------------~~~v-~~~~~~~~~~~~~~~~~~g~~kli~~ 393 (461) T Consensus 264 ~~l~~~~F~~~L~~~F~~~lG~~~~~~~~~~~l~~~~~~~~~~~~pp~~~~~~~~~R~~fPL~~~~A~~yv~~R~aLiGD 343 (445) T TIGR01988 264 LALDDEEFLAELNRAFGSRLGDLPYLDQTDFALNELFFRSSEEQYPPLGAITLVGERAAFPLSLRHAKRYVAPRLALIGD 343 (445) T ss_pred HCCCHHHHHHHHHHHHHHHCCCCCHHHHHHHHHHHHHHHHHCCEECCCEEEEECCCCCCCCCHHHHHHHHHCCCEEEEEC T ss_conf 67899899999999853315796556789999999873202440068237887687630440334358762598589805 Q ss_pred CC-CCEEEEEEEE--C-CCHHHHHHHHHHHHHCCCCHHHHH Q ss_conf 89-9869999998--1-998899999999998679878996 Q gi|254781055|r 394 AD-NHKVLGVHIL--G-HEASEIIQVLGVCLKAGCVKKDFD 430 (461) Q Consensus 394 ~~-~~~iLG~~~v--g-~~A~elI~~~~~ai~~~~t~~~l~ 430 (461) T Consensus 344 AAHt~HPlAGQG~NLG~rDv~~La~~l~~a~~~g~DiG~~~ 384 (445) T TIGR01988 344 AAHTVHPLAGQGLNLGLRDVAALAEVLVEARRRGEDIGSLA 384 (445) T ss_pred CCCCCCCCCCCCCCCCHHHHHHHHHHHHHHHHCCCCCCCHH T ss_conf 41357871001002007899999999999884566857777

HHsearch alignment for GI: 254781055 and conserved domain: TIGR01988