>TIGR01042 V-ATPase_V1_A V-type ATPase, A subunit; InterPro: IPR005725 ATPases (or ATP synthases) are membrane-bound enzyme complexes/ion transporters that combine ATP synthesis and/or hydrolysis with the transport of protons across a membrane. ATPases can harness the energy from a proton gradient, using the flux of ions across the membrane via the ATPase proton channel to drive the synthesis of ATP. Some ATPases work in reverse, using the energy from the hydrolysis of ATP to create a proton gradient. There are different types of ATPases, which can differ in function (ATP synthesis and/or hydrolysis), structure (F-, V- and A-ATPases contain rotary motors) and in the type of ions they transport , . F-ATPases (F1F0-ATPases) in mitochondria, chloroplasts and bacterial plasma membranes are the prime producers of ATP, using the proton gradient generated by oxidative phosphorylation (mitochondria) or photosynthesis (chloroplasts). V-ATPases (V1V0-ATPases) are primarily found in eukaryotic vacuoles, catalysing ATP hydrolysis to transport solutes and lower pH in organelles. A-ATPases (A1A0-ATPases) are found in Archaea and function like F-ATPases. P-ATPases (E1E2-ATPases) are found in bacteria and in eukaryotic plasma membranes and organelles, and function to transport a variety of different ions across membranes. E-ATPases are cell-surface enzymes that hydrolyse a range of NTPs, including extracellular ATP. V-ATPases (also known as V1V0-ATPase or vacuolar ATPase) (3.6.3.14 from EC) are found in the eukaryotic endomembrane system, and in the plasma membrane of prokaryotes and certain specialised eukaryotic cells. V-ATPases hydrolyse ATP to drive a proton pump, and are involved in a variety of vital intra- and inter-cellular processes such as receptor mediated endocytosis, protein trafficking, active transport of metabolites, homeostasis and neurotransmitter release . V-ATPases are composed of two linked complexes: the V1 complex (subunits A-H) contains the catalytic core that hydrolyses ATP, while the V0 complex (subunits a, c, c, c d) forms the membrane-spanning pore. V-ATPases may have an additional role in membrane fusion through binding to t-SNARE proteins . This entry represents subunit A from the V1 complex of V-ATPases. There are three copies each of subunits A and B (IPR005723 from INTERPRO), both of which participate in nucleotide binding. However, only subunit A is catalytic, functioning in ATP hydrolysis to drive the rotation of the D and F subunits of V1, as well as the V0 complex c-ring rotor subunit for proton translocation , . More information about this protein can be found at Protein of the Month: ATP Synthases .; GO: 0046933 hydrogen ion transporting ATP synthase activity rotational mechanism, 0046961 hydrogen ion transporting ATPase activity rotational mechanism, 0015986 ATP synthesis coupled proton transport, 0016469 proton-transporting two-sector ATPase complex.

Probab=100.00 E-value=0 Score=407.15 Aligned_cols=470 Identities=21% Similarity=0.298 Sum_probs=381.5 Q ss_pred EEEEEEEEECCEEEEECCCCCCCCCEEEECC-CEEEEEEEECCCEEEEEEECCCCCCCCCCEEEECCCEEEEECCHHHHH Q ss_conf 0358999827589997588877374799579-818999920598599998058668678988897798788667946983 Q gi|254780617|r 27 EIGRVLSIGDGIARVYGLNNIRAGEMVQFSH-GVYGMALNLEVDNVGVVILGSYKEISEGDIVKRTGRIVDVPVGLELLG 105 (509) Q Consensus 27 ~~G~V~~V~~giv~v~GL~~a~~GElv~~~~-g~~G~Vi~l~~d~v~i~~l~~~~gI~~G~~V~~tg~~~~vpvG~~lLG 105 (509) T Consensus 1 ~~G~~~~vsGPvv~a~~~~G~~~yelv~vG~~~l~Ge~irl~~d~atiqvyeet~G~~v~d~v~rt~~Plsv~lGPG~~~ 80 (596) T TIGR01042 1 EYGSIKKVSGPVVVAENMAGAAMYELVRVGHEELVGEIIRLEGDKATIQVYEETSGLTVGDPVLRTGKPLSVELGPGLLG 80 (596) T ss_pred CCCEEEECCCCEEEECCCCCCHHHHHHHHCCHHHCEEEEEECCCEEEEEEEECCCCEEECCCHHCCCCCCEEECCCHHHH T ss_conf 96326642575234011134024455550410001254676077058988641455044451000378514640620477 Q ss_pred CCCCHHHCCCCCCCC----------------------------------------------------------------- Q ss_conf 000300231446644----------------------------------------------------------------- Q gi|254780617|r 106 RVVDALGNPIDGKGP----------------------------------------------------------------- 120 (509) Q Consensus 106 RVvD~lG~PlDg~g~----------------------------------------------------------------- 120 (509) T Consensus 81 ~i~dGiqrPl~~i~~~~~~~yiP~G~~~~~l~~~~~W~f~~~~~~~~G~~~~GGd~~~~v~en~l~~~~~~l~P~~~G~~ 160 (596) T TIGR01042 81 NIFDGIQRPLKAIAEASQSIYIPRGVNVPALDREKKWEFTPSKKLRVGDHITGGDIYGLVEENSLLKHKILLPPRARGTI 160 (596) T ss_pred HHHHHHHHHHHHHHHHHCCEECCCCCCHHHHCHHHHCCCCCCCCCCCCCCCCCCEEEEEEEHHHHHHCEEEECCCCCCEE T ss_conf 77656545699998621425224676403211112101121010013750026504665410012101023355776207 Q ss_pred --------------------------CCCCCCCHHCCCCCCCCCCCCCHHHHHCCHHHHHCCCCCCCCCEEEEECCCCCC Q ss_conf --------------------------454441001013577311266001444160233101111568336552477886 Q gi|254780617|r 121 --------------------------IKCEQRSCTEADAPGIIQRQSVCEPLSTGIKAIDSLIPIGRGQRELIIGDRKTG 174 (509) Q Consensus 121 --------------------------i~~~~~~~i~~~~p~~~~R~~i~~~l~TGI~~ID~l~pigrGQR~~I~g~~g~G 174 (509) T Consensus 161 ~~~a~~G~y~~~~~~le~ef~G~~~~~~~~~~WPvr~~rP-~~~~~~a~~Pll~Gqrvld~lfP~v~GGt~~ipGafGCG 239 (596) T TIGR01042 161 TYIAPAGEYTVEEKVLEVEFDGKKKKYSMLQVWPVRSPRP-VAEKLAANTPLLTGQRVLDALFPSVQGGTTAIPGAFGCG 239 (596) T ss_pred EEEECCCCEEEEEEEEEEEECCCCCEEEEEEECCCCCCCC-HHHHHCCCCCCEEHHHHHHHHCCCCCCCCEEECCCCCCC T ss_conf 9973587601100357654247300024544326666564-034313578611014677754333267741203565653 Q ss_pred CHHHHHHHHHHHHHHCCCCCCCCCCEEEEEECCCCHHHHHHHHHHH----------CCCCCCCEEEEEEECCCCCHHHHH Q ss_conf 1158999999988630246678760699995167767899999851----------146742115899728878889999 Q gi|254780617|r 175 KTSIILDTFLNQKSSHDKGSEKDKVYCIYVAIGQKRSSVARFVKAL----------EDRGALSYSIVVVASASDPAPMQL 244 (509) Q Consensus 175 Kt~l~~~~I~nq~~~~~~~~~~~~v~~V~~~IGer~~ev~~~~~~l----------~~~~~~~~tvvv~a~a~~~~~~r~ 244 (509) T Consensus 240 ktvisq-~l---------skysnsd~i~yvGCGerGnem~evl~~fP~l~~~~~~G~~~~imkrt~lvantsnmPvaare 309 (596) T TIGR01042 240 KTVISQ-SL---------SKYSNSDVIVYVGCGERGNEMAEVLRDFPELTIEVPDGREESIMKRTTLVANTSNMPVAARE 309 (596) T ss_pred HHHHHH-HH---------HHHCCCCEEEEEECCCCCHHHHHHHHHCHHHEEEECCCCCCHHHHHHHHHHCCCCCCHHHHH T ss_conf 257665-55---------53214761799606875126899986320305740478742023333221002467502211 Q ss_pred HHHHHHHHHHHHHHCCCCCEEEEEECHHHHHHHHHHHHHHCCCCCCCCCCCCCCHHHHHHHHHHHHHCCC---CCCCCCE Q ss_conf 9887666666754204688479961647899999875453037875433375200124678888750454---4588735 Q gi|254780617|r 245 LAPFAGCAMGEYFRDNGYHALIAYDDLQKHAVAYRQLSLLLRRPPGREAYPGDVFYLHSRLLERAAKMSD---ALGAGSL 321 (509) Q Consensus 245 ~ap~~a~aiAEyfr~~G~~VLi~~Ddltr~A~a~reisl~~~~pp~~~gyp~~vf~~~s~l~ERa~~~~~---~~g~GSi 321 (509) T Consensus 310 asiytGitl~eyfrd~G~~~~m~ads~srWaealreisGrl~emPad~GyPayl~a~lasfye~~G~~~~~G~P~r~G~v 389 (596) T TIGR01042 310 ASIYTGITLAEYFRDMGYNVSMMADSTSRWAEALREISGRLAEMPADSGYPAYLGARLASFYERAGRVKCLGSPEREGSV 389 (596) T ss_pred HHHHHHHHHHHHHHHCCCEEEEEECCCHHHHHHHHHHHHHHHCCCCCCCCHHHHHHHHHHHHHHCCCEEECCCCCCCCEE T ss_conf 12330025767776328726775344036899998763133216667785067887888776305714540488865106 Q ss_pred EEEEEEECCCCCCCCCHHHHHHHHHCCEEEEECCHHHHCCCCCCCCCCCHHHCCCCCCC------HHHHHHHHHHHHHHH Q ss_conf 67531003676644311466885406169961501221026654334441220343438------988775567888799 Q gi|254780617|r 322 TALPVIETQVNDVSAYIPTNVISITDGQIFLETELFYQGIRPAINIGLSVSRVGSAAQV------KAMKQVSGAVKGELA 395 (509) Q Consensus 322 T~~~~v~~~~~D~~~~i~~~~~si~DG~i~l~~~l~~~g~~Paid~~~S~SRv~~~~~~------~~~~~~a~~lr~~la 395 (509) T Consensus 390 ~iv~avsP~GGdfsdPvt~atl~i~qvfWGldkklaqrkh~Ps~n~~~sys~y~~~l~~~y~~~~~~f~~lr~~~~~~l~ 469 (596) T TIGR01042 390 SIVGAVSPPGGDFSDPVTSATLGIVQVFWGLDKKLAQRKHFPSVNWLISYSKYLRALEEFYEKNYPEFVSLRTKIKEILQ 469 (596) T ss_pred EEEEEECCCCCCCCCCHHHHHHHHHHHHHHHHHHHHHHCCCCHHHHHHHHHHHHHHHHHHHHHCCCHHHHHHHHHHHHHH T ss_conf 89973068988756521244544435433123566642157604453327899999998753103037999999999974 Q ss_pred HHHHHHHHHHHH-C-CCCHHHHHHHHHHHHHHH-HHCCCCCCCC----CHHHHHHHHHHHHCCCCCCCC--HHH----HH Q ss_conf 887678798763-3-899899999999999999-9669998874----889999999998669806679--899----99 Q gi|254780617|r 396 QYREMSSFSKFS-S-DLDSSTQKFLSKGERLTE-LLKQPQFSPL----AMEEQVVMIFAGISGCLDEVA--VSQ----VR 462 (509) Q Consensus 396 qy~Ele~f~~fg-s-dlD~~t~~~l~rg~ri~e-~LkQ~~~~p~----~~~~qv~~l~a~~~G~ld~i~--v~~----I~ 462 (509) T Consensus 470 ~~~~l~~~vqlvGk~~l~~~dk~~l~~a~~~~~d~l~qn~~~~yd~~CP~yk~~~m~~~~~~-f~~~~~~~~~~~~~~~~ 548 (596) T TIGR01042 470 EEEELEEIVQLVGKSALAETDKITLEVAKLIKEDFLQQNGYSKYDKFCPFYKTVGMLRNLIA-FYDLARKAVEKTAQGSS 548 (596) T ss_pred HHHHHHHHHHHHHHHHHCCCCCCHHHHHHHHHHHHHHHCCCCCHHCCCCHHHHHHHHHHHHH-HHHHHHHHHHHHHHCCC T ss_conf 03458999998411320134510246899999876531365301223624889999999999-99999999874320010 Q ss_pred HHHHHHHHHHHHHHHHHHHHHHHCCCCCH-HHHHHHHHHHHHHHHHC Q ss_conf 99999999997415999998873279898-99999999999998515 Q gi|254780617|r 463 KFETNFLSHMRVSSQDILEDIRKQKVLTD-DIRSKLINEIKVFLEDF 508 (509) Q Consensus 463 ~fe~~l~~~l~~~~~ei~~~I~~~~~l~d-e~~~~L~~~i~~~~~~F 508 (509) T Consensus 549 ~~~k~~~~~~~~~~~~~~~~~~s~kf~~P~~G~~~~~~~~~~l~~~~ 595 (596) T TIGR01042 549 DDNKITWSIIKESLGDLLYKLSSMKFEDPSDGEEKIKKEYEKLAEDL 595 (596) T ss_pred HHHHHHHHHHHHHHHHHHHHHHHHHCCCCHHHHHHHHHHHHHHHHHC T ss_conf 01257789999999999999887530370025899999999999861

HHsearch alignment for GI: 254780617 and conserved domain: TIGR01042