>TIGR01706 NAPA periplasmic nitrate reductase, large subunit; InterPro: IPR010051 This entry represents the large subunit of a family of nitrate reductases found in proteobacteria which are localised to the periplasm. This subunit binds molybdopterin and contains a twin-arginine motif at the N terminus. The protein associates with NapB, a soluble haem-containing protein and NapC, a membrane-bound cytochrome c. The periplasmic nitrate reductases are not involved in the assimilation of nitrogen, and are not directly involved in the formation of electrochemical gradients (i.e. respiration) either. Rather, the purpose of this enzyme is either dissimilatory (i.e. to dispose of excess reductive equivalents) or indirectly respiratory by virtue of the consumption of electrons derived from NADH via the proton translocating NADH dehydrogenase. The enzymes from Alicagenes eutrophus and Paracoccus pantotrophus have been characterised. In Escherichia coli (as well as other organisms) this gene is part of a large nitrate reduction operon (napFDAGHBC).; GO: 0008940 nitrate reductase activity, 0030151 molybdenum ion binding, 0051539 4 iron 4 sulfur cluster binding, 0042128 nitrate assimilation.

Probab=100.00 E-value=0 Score=367.32 Aligned_cols=395 Identities=19% Similarity=0.260 Sum_probs=300.7 Q ss_pred EEEEECCCCCCCCCEEEEECCCCEEEEEECCCCCCCCCCEECCCCCCCCCHHH-HCCCCHHHEEC--------CCCEEEC Q ss_conf 35220121168864366751599998852478887777411355422100000-00011011002--------2220232 Q gi|254780859|r 228 TKTDSIDVMDALGSAIRIDARGCEVMRILPRINESINEEWISDKTRFIWDGLK-VQRLDCPYARI--------NGRLKPV 298 (700) Q Consensus 228 ~~~~SvC~~C~~GC~i~v~v~~g~i~rv~~~~~~~vN~g~lC~KGRf~~d~~~-~dRL~~PliR~--------~g~~~~i 298 (700) T Consensus 41 ~W~KApCRFCGTGCgv~v~~~~g~vVAt~GDp~A~VN~GLNCiKGYFl~KIMYG~DRL~~PLlR~k~~G~y~K~G~F~pv 120 (930) T TIGR01706 41 KWDKAPCRFCGTGCGVLVGVKDGRVVATQGDPEAPVNRGLNCIKGYFLSKIMYGQDRLTQPLLRMKDKGKYDKDGEFTPV 120 (930) T ss_pred EECCCCCCCCCCCCEEEEEEECCEEEEECCCCCCCCCCCCCCCCCCCCCEEEECCCHHCCCCCCCCCCCCCCCCCCCCCC T ss_conf 32455553136885168874167278606888773005764100000240331630114640000247741337762410 Q ss_pred CHHHHHHHHHHHHCCCC-----CCEEEEECCCCCCHHHHHHHHHHH-HCCCCCEECCCCCCCCC------HHHHCCCCCC Q ss_conf 41456688875201344-----531478504323235554788986-36877242023344466------4340125467 Q gi|254780859|r 299 SWDYALKAIKSAVLSSD-----VKLGAVVGDLSSVEEIYALKLLMQ-SLGCENFDCRQNGEYLD------PSYGRASYIF 366 (700) Q Consensus 299 SWdeAl~~ia~~L~~~~-----~~~g~~~g~~~t~Ee~y~~k~l~~-~lGt~nid~~~~~~~~~------~~~~~~~~~~ 366 (700) T Consensus 121 ~W~~AFD~M~~~~K~~l~~kGp~~~g~fgsgQwTi~EGYAA~KL~kAGFRsNNiDPNARHCMASA~~gFMrTFG~DEP-- 198 (930) T TIGR01706 121 SWDQAFDEMEEQFKRALKEKGPTAIGMFGSGQWTIWEGYAALKLMKAGFRSNNIDPNARHCMASAVVGFMRTFGMDEP-- 198 (930) T ss_pred CHHHHHHHHHHHHHHHHHHCCCCEEEEECCCCCEEECHHHHHHHHHCCCCCCCCCCCHHHHHHHHHHHHHHHCCCCCC-- T ss_conf 478899999999999997349827986237520020117899997546654778865557899999998875388898-- Q ss_pred CCCHHHHHCCCEEEEECCCCCCCCCCHHHHHHHHHHCC--CCEEECCC-----------------CCHHH---HHHHHCC Q ss_conf 78787740185799973853225731025778999759--97066168-----------------50122---3344304 Q gi|254780859|r 367 NPTIQGIEEADAMLIIGSNPRLEAAVLNARIRKRWRRG--NFPIAVIG-----------------DVGEL---RYKYEHL 424 (700) Q Consensus 367 ~~~i~die~ad~illiG~Np~~~~Pvl~~rirka~~~g--~~~I~vi~-----------------~~~~l---~~~~~~l 424 (700) T Consensus 199 ~GCYDD~E~aDafvlWG~NMAEMHPiLW~Rv~dRrLs~~~~v~V~vLSTf~~R~~~lAD~~iiF~P~~DLai~NyIA~~I 278 (930) T TIGR01706 199 MGCYDDFEAADAFVLWGSNMAEMHPILWTRVTDRRLSNHPKVKVVVLSTFTHRSFDLADIGIIFKPQTDLAILNYIANYI 278 (930) T ss_pred CCCCHHHHHCCCEEECCCCHHHHCCHHHHHHCCCCCCCCCCEEEEEEECCCCCCHHHCCCCEEECCCCCHHHHHHHHHHH T ss_conf 87501044206244314321220420220002100377884168986312332022227740235884177888899887 Q ss_pred -CCC---------------------------------------------------------------------------- Q ss_conf -898---------------------------------------------------------------------------- Q gi|254780859|r 425 -GNG---------------------------------------------------------------------------- 427 (700) Q Consensus 425 -~~~---------------------------------------------------------------------------- 427 (700) T Consensus 279 i~n~p~~~n~dF~~~H~~f~~g~tdIGYGlR~~~~hP~~k~a~~~~~~~~~~~~~~~~~~~~~s~lg~~~g~~~~~~~~g 358 (930) T TIGR01706 279 IQNNPEAVNKDFVNKHTVFKKGVTDIGYGLRNNPDHPLEKAAKKDTVEKENVINADDEAATKLSTLGVKAGDKFEMKHQG 358 (930) T ss_pred HCCCHHHHHHHHHHHHHHHHHCCCCCCCCCCCCCCCHHHHHHHHHHHHHHHCCCCCCCCHHHHHHHHHCCCCHHHHHHHH T ss_conf 50685576689887425434044313455678898626777765444443112578510100001000013112222210 Q ss_pred ---------HHHHHHHHCCCC------------------------HHHHHHHH-CCCCHHHHHHHHHHCCCCHHHHHHHH Q ss_conf ---------678888826877------------------------88999872-35310235443321047469898989 Q gi|254780859|r 428 ---------SEALADLVSGQH------------------------PFFKKLQE-ATRPLIIVGQGALRASDNVEVMANIA 473 (700) Q Consensus 428 ---------~e~l~~~~~g~~------------------------~~~~~l~~-a~~~~ii~G~g~~~~~~g~~~~~al~ 473 (700) T Consensus 359 ~~~~~w~~~F~ef~~~va~Yt~~~~~~~~~v~~~~~l~~~~~~L~~LA~lY~dpn~KV~S~WTMGfNQHtRG~W~n~~vY 438 (930) T TIGR01706 359 VADKNWEISFEEFKKFVAEYTLEKVSELSGVDDNESLEDFKDKLEQLAELYADPNRKVMSLWTMGFNQHTRGVWANNLVY 438 (930) T ss_pred HCCCCCCCCHHHHHHHHCCCCHHHHHHHHCCCCHHHHHHHHHHHHHHHHHHCCCCCCEEEEEECCCCCCCCCHHHHHHHH T ss_conf 00011101378898530100345677640575223577889999999997327786078774067544521022888899 Q ss_pred HHHHHHHCCCCCCCCCCCCCCCCCCCCC-HHCCC------------------------------CCCCCCCCHHHH---H Q ss_conf 9988741058533475424675310452-10177------------------------------658652368888---6 Q gi|254780859|r 474 KLVIDVGGISDSWNGFAVLHTVASRVGA-LDLGF------------------------------VPADDTINAMNI---L 519 (700) Q Consensus 474 ~l~~~~G~ig~~g~G~~~L~~~~n~~Ga-~d~g~------------------------------~P~~~~~~~~~~---~ 519 (700) T Consensus 439 ~lHlL~GK~a~PG~~pFSLTGQpSACGTAReVGTF~HRLPaDMvV~NpkhR~~~E~~W~~P~gtIp~kpG~~~v~~~R~L 518 (930) T TIGR01706 439 NLHLLTGKIAKPGNSPFSLTGQPSACGTAREVGTFSHRLPADMVVTNPKHREIAEKIWKIPEGTIPEKPGLHAVAQDRAL 518 (930) T ss_pred HHHHHHCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCEECCHHHHHHHHHHHCCCCCCCCCCCCHHHHHHHCCC T ss_conf 98875165468888753457776666652346632334876635428677777777515875567776771788851013 Q ss_pred --HCCCEEEECCCCHHHCCC------------CCCEEEHHHHHHHHHHHHCCEEECCCCCCCCCCEEEEECCEEEEECCC Q ss_conf --016759980764220166------------543450221166668874557704786202472088208867420443 Q gi|254780859|r 520 --DKTDIVFLLGADELDFSD------------KQALTVYIGSHGDRGAQSADVILPGAAYTEKSGLWVNTEGRVQMGMRA 585 (700) Q Consensus 520 --~~~~~l~~~g~d~l~~~~------------~~~fvV~~d~~~t~tA~~ADVVLP~a~~~Ek~Gtf~N~EgRvQ~~~~a 585 (700) T Consensus 519 ~DG~l~~yWv~vnNn~Qa~~N~~~e~~pg~R~~~NFIvVSD~YPtv~A~aADLiLP~AM~vEKeGAYGNAERRT~~W~Q~ 598 (930) T TIGR01706 519 KDGKLNFYWVQVNNNMQAGPNINEERLPGYRNPDNFIVVSDAYPTVTALAADLILPSAMWVEKEGAYGNAERRTQVWKQQ 598 (930) T ss_pred CCCEEEEEEEEECCCCCCCCCCCCCCCCCCCCCCCEEEEECCCCCHHHHHHHHHCCHHHHHCCCCCCCCHHHHHHHHHHC T ss_conf 57806789998637433456755234654568875189846875325776645310023211367755601331021320 Q ss_pred CCCCCCCCHHHHHHHHHHHHHCCCCCCCCHHHHHHHHHHHCCCCC Q ss_conf 288555740799999999980779968798999999999781110 Q gi|254780859|r 586 IFPPGDAKEDWEIICALADELKCSLPFSSLSQLRSHLYSHHPHFM 630 (700) Q Consensus 586 v~p~geak~dw~Il~~La~~LG~~~~~~~~~ei~~ei~~~~P~~~ 630 (700) T Consensus 599 V~~~Gea~SD~WQ~~eF~~RFk~~eVWp------ee~~a~~p~~~ 637 (930) T TIGR01706 599 VEAPGEARSDLWQLVEFSKRFKVEEVWP------EELLAKKPEYR 637 (930) T ss_pred CCCCCCCCCCHHHHHHHHHCCCCCCCCC------HHHHHCCCCHH T ss_conf 0577776563578877742045313682------67862044204

HHsearch alignment for GI: 254780859 and conserved domain: TIGR01706