>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=472.45 Aligned_cols=411 Identities=23% Similarity=0.364 Sum_probs=356.7 Q ss_pred EEEEEEEEECCEEEEECCCCCCCCCCEEEEECCCCCEEEEEEEECCCEEEEEECCCCCCCCCCCEEEECCC-CEEECCHH Q ss_conf 01289999525899982688887351899956996079999974199799998048557467888997288-55524666 Q gi|254780684|r 22 QGGYISSITSVYYTVTCLSQYVCLGDFVVHQGKNSDNLGQVIRINLDIVYICPVGIGEEISLGDLVFHWGR-FRISPSAC 100 (438) Q Consensus 22 ~~G~V~~V~G~ii~v~Gl~~~v~iGelv~i~~~~~~v~geVi~~~~~~~~l~~~~~~~gI~~G~~V~~~g~-~~i~vG~~ 100 (438) T Consensus 1 ~~G~~~~vsGPvv~a~~~~G-~~~yelv~v--G~~~l~Ge~irl~~d~atiqvyeet~G~~v~d~v~rt~~Plsv~lGPG 77 (596) T TIGR01042 1 EYGSIKKVSGPVVVAENMAG-AAMYELVRV--GHEELVGEIIRLEGDKATIQVYEETSGLTVGDPVLRTGKPLSVELGPG 77 (596) T ss_pred CCCEEEECCCCEEEECCCCC-CHHHHHHHH--CCHHHCEEEEEECCCEEEEEEEECCCCEEECCCHHCCCCCCEEECCCH T ss_conf 96326642575234011134-024455550--410001254676077058988641455044451000378514640620 Q ss_pred HHHHHHHHHHHHCC------------------------------------------------------------------ Q ss_conf 88654307763047------------------------------------------------------------------ Q gi|254780684|r 101 WCGRVINALGKPID------------------------------------------------------------------ 114 (438) Q Consensus 101 lLGRViD~lG~PlD------------------------------------------------------------------ 114 (438) T Consensus 78 ~~~~i~dGiqrPl~~i~~~~~~~yiP~G~~~~~l~~~~~W~f~~~~~~~~G~~~~GGd~~~~v~en~l~~~~~~l~P~~~ 157 (596) T TIGR01042 78 LLGNIFDGIQRPLKAIAEASQSIYIPRGVNVPALDREKKWEFTPSKKLRVGDHITGGDIYGLVEENSLLKHKILLPPRAR 157 (596) T ss_pred HHHHHHHHHHHHHHHHHHHHCCEECCCCCCHHHHCHHHHCCCCCCCCCCCCCCCCCCEEEEEEEHHHHHHCEEEECCCCC T ss_conf 47777656545699998621425224676403211112101121010013750026504665410012101023355776 Q ss_pred ------------------------CCCCCCCCCEEEEECCCCCCCCCCCCCCCCHHHHHHHHHHHHHHCCCCEEEEECCC Q ss_conf ------------------------88777555301211254333000133110011124587520022358503752667 Q gi|254780684|r 115 ------------------------GDDSLGKGDLSMEIMSKVPPAMNRQRVEKGFKTGIRVIDIFTPLCHGQRIGVFAGS 170 (438) Q Consensus 115 ------------------------g~~~l~~~~~~~~i~~~~p~p~~R~~i~e~L~TGIr~ID~l~pig~GQR~gIfg~~ 170 (438) T Consensus 158 G~~~~~a~~G~y~~~~~~le~ef~G~~~~~~~~~~WPvr~-~rP~~~~~~a~~Pll~Gqrvld~lfP~v~GGt~~ipGaf 236 (596) T TIGR01042 158 GTITYIAPAGEYTVEEKVLEVEFDGKKKKYSMLQVWPVRS-PRPVAEKLAANTPLLTGQRVLDALFPSVQGGTTAIPGAF 236 (596) T ss_pred CEEEEEECCCCEEEEEEEEEEEECCCCCEEEEEEECCCCC-CCCHHHHHCCCCCCEEHHHHHHHHCCCCCCCCEEECCCC T ss_conf 2079973587601100357654247300024544326666-564034313578611014677754333267741203565 Q ss_pred CCCHHHHHHHHHHHCCCCCEEEEECCCCCHHHHHHHHHH------HCCC-----CCCEEEEEECCCCCHHHHHHHHHHHH Q ss_conf 889999999987407898389931246522388999986------4277-----55328984157788034444445677 Q gi|254780684|r 171 GIGKSTLLSMFARSDCFDKVIISLVGERGREVREFIEDY------LGDN-----LKKSVVVVATSDESPILRKMAPLTAV 239 (438) Q Consensus 171 GvGKt~Ll~~i~~~~~~dv~V~alIGeR~rev~efi~~~------~~~~-----l~~tvvv~~t~d~~~~~r~~a~~~a~ 239 (438) T Consensus 237 GCGktvisq~lskysnsd~i~yvGCGerGnem~evl~~fP~l~~~~~~G~~~~imkrt~lvantsnmPvaareasiytGi 316 (596) T TIGR01042 237 GCGKTVISQSLSKYSNSDVIVYVGCGERGNEMAEVLRDFPELTIEVPDGREESIMKRTTLVANTSNMPVAAREASIYTGI 316 (596) T ss_pred CCCHHHHHHHHHHHCCCCEEEEEECCCCCHHHHHHHHHCHHHEEEECCCCCCHHHHHHHHHHCCCCCCHHHHHHHHHHHH T ss_conf 65325766555532147617996068751268999863203057404787420233332210024675022111233002 Q ss_pred HHHHHHHHCCCCEEEEEECHHHHHHHHHHHHHHCCCCCCCCCCCHHHHHHCCHHHHHHHCC-----CCCCCCEEEEEEEE Q ss_conf 7888864267988999709899999987665404778432366324554200444443113-----67885235543334 Q gi|254780684|r 240 TIAEYFSSKGDNVLLILDSITRFAHSIREIATNSGELPVARGYPTSVFSELPRLLERIGPS-----EKEKGNITAVISVL 314 (438) Q Consensus 240 ~iAEyfr~~G~~Vll~~Ds~tr~a~A~reis~~~ge~P~~~gyp~~~~~~~~~l~ERag~~-----~~~~GSiT~~~~v~ 314 (438) T Consensus 317 tl~eyfrd~G~~~~m~ads~srWaealreisGrl~emPad~GyPayl~a~lasfye~~G~~~~~G~P~r~G~v~iv~avs 396 (596) T TIGR01042 317 TLAEYFRDMGYNVSMMADSTSRWAEALREISGRLAEMPADSGYPAYLGARLASFYERAGRVKCLGSPEREGSVSIVGAVS 396 (596) T ss_pred HHHHHHHHCCCEEEEEECCCHHHHHHHHHHHHHHHCCCCCCCCHHHHHHHHHHHHHHCCCEEECCCCCCCCEEEEEEEEC T ss_conf 57677763287267753440368999987631332166677850678878887763057145404888651068997306 Q ss_pred ECCCCCCCHHHHHHHHHCCCEEEEEHHHHHCCCCCCCCCCCCCCCCCHH------CCCHHHHHHHHHHHHHHHHHHHHHH Q ss_conf 2167642027899986126089870427758971311445640002212------0899999999999999999999999 Q gi|254780684|r 315 VDGDNHNDPIADSVRSILDGHIVLNRSLAEEGRYPPVDPLASVSRLADK------AWSADEKKLVSSLTHLIHRFEETRD 388 (438) Q Consensus 315 ~~~dd~~~pi~~~~~~i~DG~i~L~r~la~~g~~Paid~~~S~SR~~~~------~~~~~~~~~~~~~~~~l~~y~~~~~ 388 (438) T Consensus 397 P~GGdfsdPvt~atl~i~qvfWGldkklaqrkh~Ps~n~~~sys~y~~~l~~~y~~~~~~f~~lr~~~~~~l~~~~~l~~ 476 (596) T TIGR01042 397 PPGGDFSDPVTSATLGIVQVFWGLDKKLAQRKHFPSVNWLISYSKYLRALEEFYEKNYPEFVSLRTKIKEILQEEEELEE 476 (596) T ss_pred CCCCCCCCCHHHHHHHHHHHHHHHHHHHHHHCCCCHHHHHHHHHHHHHHHHHHHHHCCCHHHHHHHHHHHHHHHHHHHHH T ss_conf 89887565212445444354331235666421576044533278999999987531030379999999999740345899 Q ss_pred HHHHHCCCCCCCHHHHHH-HHHHHHHH-HHHCCCCCC-CCCHHHHHHHHHHCC Q ss_conf 998523446999899999-99999999-983599888-999768999998709 Q gi|254780684|r 389 IRLIGGYRPGVDLILDKA-VHQVPIIY-DFLKQSPSD-LSSEDVFQEITKKLQ 438 (438) Q Consensus 389 l~~~g~y~~g~d~~~d~~-i~~~~~i~-~fl~Q~~~e-~~~~~~~~~~~~~l~ 438 (438) T Consensus 477 ~vqlvGk-~~l-~~~dk~~l~~a~~~~~d~l~qn~~~~yd~~CP~yk~~~m~~ 527 (596) T TIGR01042 477 IVQLVGK-SAL-AETDKITLEVAKLIKEDFLQQNGYSKYDKFCPFYKTVGMLR 527 (596) T ss_pred HHHHHHH-HHH-CCCCCCHHHHHHHHHHHHHHHCCCCCHHCCCCHHHHHHHHH T ss_conf 9998411-320-13451024689999987653136530122362488999999

HHsearch alignment for GI: 254780684 and conserved domain: TIGR01042