>TIGR00962 atpA ATP synthase F1, alpha subunit; InterPro: IPR005294 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. F-ATPases (also known as F1F0-ATPase, or H(+)-transporting two-sector ATPase) (3.6.3.14 from EC) are composed of two linked complexes: the F1 ATPase complex is the catalytic core and is composed of 5 subunits (alpha, beta, gamma, delta, epsilon), while the F0 ATPase complex is the membrane-embedded proton channel that is composed of at least 3 subunits (A-C), nine in mitochondria (A-G, F6, F8). Both the F1 and F0 complexes are rotary motors that are coupled back-to-back. In the F1 complex, the central gamma subunit forms the rotor inside the cylinder made of the alpha(3)beta(3) subunits, while in the F0 complex, the ring-shaped C subunits forms the rotor. The two rotors rotate in opposite directions, but the F0 rotor is usually stronger, using the force from the proton gradient to push the F1 rotor in reverse in order to drive ATP synthesis . These ATPases can also work in reverse to hydrolyse ATP to create a proton gradient. This entry represents the alpha subunit found in the F1 complex of F-ATPases. In F-ATPases, there are three copies each of the alpha and beta subunits that form the catalytic core of the F1 complex, while the remaining F1 subunits (gamma, delta, epsilon) form part of the stalks. There is a substrate-binding site on each of the alpha and beta subunits, those on the beta subunits being catalytic, while those on the alpha subunits are regulatory. The alpha-subunit contains a highly conserved adenine-specific non-catalytic nucleotide-binding domain, with a conserved amino acid sequence of Gly-X-X-X-X-Gly-Lys. The alpha and beta subunits form a cylinder that is attached to the central stalk. The alpha/beta subunits undergo a sequence of conformational changes leading to the formation of ATP from ADP, which are induced by the rotation of the gamma subunit, itself is driven by the movement of protons through the F0 complex C subunit . More information about this protein can be found at Protein of the Month: ATP Synthases .; GO: 0016820 hydrolase activity acting on acid anhydrides catalyzing transmembrane movement of substances, 0015986 ATP synthesis coupled proton transport, 0016469 proton-transporting two-sector ATPase complex.

Probab=100.00 E-value=0 Score=1553.04 Aligned_cols=508 Identities=65% Similarity=1.041 Sum_probs=505.7 Q ss_pred CCCHHHHHHHHHHHHHCCCCCCCEEEEEEEEEEECCEEEEECCCCCCCCCEEEECCCEEEEEEEECCCEEEEEEECCCCC Q ss_conf 88889999999999842455542010358999827589997588877374799579818999920598599998058668 Q gi|254780617|r 2 DIHAAEISDILRKRIKDFGNDSEFSEIGRVLSIGDGIARVYGLNNIRAGEMVQFSHGVYGMALNLEVDNVGVVILGSYKE 81 (509) Q Consensus 2 ~~~~~eis~~l~~~i~~~~~~~~~~~~G~V~~V~~giv~v~GL~~a~~GElv~~~~g~~G~Vi~l~~d~v~i~~l~~~~g 81 (509) T Consensus 1 ~l~~~Ei~~~I~~~I~~f~~~~~~~evG~V~sVgDGiArv~GL~~vm~~El~eF~~G~~GiAlNLEedsVG~vi~Gd~~~ 80 (520) T TIGR00962 1 QLKLEEISELIKQQIKNFEKDIEVEEVGTVVSVGDGIARVYGLENVMSGELVEFEGGVQGIALNLEEDSVGAVILGDYSN 80 (520) T ss_pred CCCHHHHHHHHHHHHHCCCCEEEEECCCEEEEECCCEEEEEECHHHHHCCEEECCCCCEEEEEEECCCCEEEEEECCCCC T ss_conf 98777999999998626251013303627998338789996011014010025578958999971358624899788666 Q ss_pred CCCCCEEEECCCEEEEECCHHHHHCCCCHHHCCCCCCCCCCCCCCCHHCCCCCCCCCCCCCHHHHHCCHHHHHCCCCCCC Q ss_conf 67898889779878866794698300030023144664445444100101357731126600144416023310111156 Q gi|254780617|r 82 ISEGDIVKRTGRIVDVPVGLELLGRVVDALGNPIDGKGPIKCEQRSCTEADAPGIIQRQSVCEPLSTGIKAIDSLIPIGR 161 (509) Q Consensus 82 I~~G~~V~~tg~~~~vpvG~~lLGRVvD~lG~PlDg~g~i~~~~~~~i~~~~p~~~~R~~i~~~l~TGI~~ID~l~pigr 161 (509) T Consensus 81 i~EG~~VKRTg~il~vPVG~~llGRvVn~LG~PiDGkGpI~~~~~~~~E~~APGv~~RkSV~ePlQTGIkAIDAliPIGR 160 (520) T TIGR00962 81 IREGSTVKRTGRILKVPVGDGLLGRVVNALGQPIDGKGPIESDEFRPIEKIAPGVIERKSVHEPLQTGIKAIDALIPIGR 160 (520) T ss_pred CCCCCCCCCCCHHCCCCCCCEEEEEEECCCCCCCCCCCCCCCCCCCCCCCCCCCEEECCCCCCCCHHHHHHHHCCCCCCC T ss_conf 53265032032000324575688326845778657777677666343214588552146678730000557641468987 Q ss_pred CCEEEEECCCCCCCHHHHHHHHHHHHHHCCCCCCCCCCEEEEEECCCCHHHHHHHHHHHCCCCCCCEEEEEEECCCCCHH Q ss_conf 83365524778861158999999988630246678760699995167767899999851146742115899728878889 Q gi|254780617|r 162 GQRELIIGDRKTGKTSIILDTFLNQKSSHDKGSEKDKVYCIYVAIGQKRSSVARFVKALEDRGALSYSIVVVASASDPAP 241 (509) Q Consensus 162 GQR~~I~g~~g~GKt~l~~~~I~nq~~~~~~~~~~~~v~~V~~~IGer~~ev~~~~~~l~~~~~~~~tvvv~a~a~~~~~ 241 (509) T Consensus 161 GQRELIIGDRqTGKTavAIDtIiNQk~~~~~~~~~~dv~CvYVAIGQK~StvA~vv~~LE~~GAM~YTiVV~A~ASdsA~ 240 (520) T TIGR00962 161 GQRELIIGDRQTGKTAVAIDTIINQKDSGELGDEKKDVYCVYVAIGQKASTVAQVVRKLEEHGAMDYTIVVAASASDSAS 240 (520) T ss_pred CCEEEEECCCCCCCCHHHHHHHHHHCCCCCCCCCCCCEEEEEEEECCCHHHHHHHHHHHHHCCCCCCCEEEEECCCCCHH T ss_conf 62223423266673056557777305776567865564899962075356899999997534871110336741677212 Q ss_pred HHHHHHHHHHHHHHHHHCCCCCEEEEEECHHHHHHHHHHHHHHCCCCCCCCCCCCCCHHHHHHHHHHHHHCCCC------ Q ss_conf 99998876666667542046884799616478999998754530378754333752001246788887504544------ Q gi|254780617|r 242 MQLLAPFAGCAMGEYFRDNGYHALIAYDDLQKHAVAYRQLSLLLRRPPGREAYPGDVFYLHSRLLERAAKMSDA------ 315 (509) Q Consensus 242 ~r~~ap~~a~aiAEyfr~~G~~VLi~~Ddltr~A~a~reisl~~~~pp~~~gyp~~vf~~~s~l~ERa~~~~~~------ 315 (509) T Consensus 241 lqYLAPY~G~tmaEyF~d~GkhaLIiYDDLSKqA~AYR~iSLLLRRPPGREAyPGDVFYLHSRLLERAAKLsdeYve~Ft 320 (520) T TIGR00962 241 LQYLAPYTGCTMAEYFRDNGKHALIIYDDLSKQAVAYRQISLLLRRPPGREAYPGDVFYLHSRLLERAAKLSDEYVEKFT 320 (520) T ss_pred HHHHHHHHHHHHHHHHHHCCCEEEEEEECCHHHHHHHHHHHHHHCCCCCCCCCCCCCHHHHHHHHHHHHHCCHHHHHHHH T ss_conf 45420688999999998659737999747407899999999871886587169974014545689998640788885430 Q ss_pred ----CCC-CCEEEEEEEECCCCCCCCCHHHHHHHHHCCEEEEECCHHHHCCCCCCCCCCCHHHCCCCCCCHHHHHHHHHH Q ss_conf ----588-735675310036766443114668854061699615012210266543344412203434389887755678 Q gi|254780617|r 316 ----LGA-GSLTALPVIETQVNDVSAYIPTNVISITDGQIFLETELFYQGIRPAINIGLSVSRVGSAAQVKAMKQVSGAV 390 (509) Q Consensus 316 ----~g~-GSiT~~~~v~~~~~D~~~~i~~~~~si~DG~i~l~~~l~~~g~~Paid~~~S~SRv~~~~~~~~~~~~a~~l 390 (509) T Consensus 321 kGevkGgtGSlTALPIIETQAGDvSAYIPTNVISITDGQIFLesdLFn~GiRPAINvGlSVSRVGgAAQiKAmK~vaG~L 400 (520) T TIGR00962 321 KGEVKGGTGSLTALPIIETQAGDVSAYIPTNVISITDGQIFLESDLFNSGIRPAINVGLSVSRVGGAAQIKAMKQVAGSL 400 (520) T ss_pred CCCCCCCCCCCCCCCCEEECCCCEEEECCCCEEECCCCHHHHHHHHHCCCCCCCEECCEEEEECCHHHHHHHHHHHCCCH T ss_conf 56324665352367722521487866307871352455112102011068987141756674420357766555423522 Q ss_pred HHHHHHHHHHHHHHHHHCCCCHHHHHHHHHHHHHHHHHCCCCCCCCCHHHHHHHHHHHHCCCCCCCCHHHHHHHHHHHHH Q ss_conf 88799887678798763389989999999999999996699988748899999999986698066798999999999999 Q gi|254780617|r 391 KGELAQYREMSSFSKFSSDLDSSTQKFLSKGERLTELLKQPQFSPLAMEEQVVMIFAGISGCLDEVAVSQVRKFETNFLS 470 (509) Q Consensus 391 r~~laqy~Ele~f~~fgsdlD~~t~~~l~rg~ri~e~LkQ~~~~p~~~~~qv~~l~a~~~G~ld~i~v~~I~~fe~~l~~ 470 (509) T Consensus 401 rLeLAQYRELeAFsQFaSDLD~ATk~qLerG~R~vElLKQ~~~~P~pV~~Q~v~~yA~~~GyLd~iPv~~v~~Fe~~l~~ 480 (520) T TIGR00962 401 RLELAQYRELEAFSQFASDLDEATKAQLERGKRLVELLKQPQYKPLPVEEQVVILYAGTKGYLDDIPVDKVRKFEEELLD 480 (520) T ss_pred HHHHHHHHHHHHHHHHHHHHHHHHHHHHHCCCCEEEEEECCCCCCCCHHHHHHHHHHHHCCCCCCCCHHHHHHHHHHHHH T ss_conf 45575488998886401223489999986067234200068865885999999999986145464344679989999999 Q ss_pred HHHHHHHHHHHHHHHCCCCCHHHHHHHHHHHHHHHHHCC Q ss_conf 997415999998873279898999999999999985159 Q gi|254780617|r 471 HMRVSSQDILEDIRKQKVLTDDIRSKLINEIKVFLEDFN 509 (509) Q Consensus 471 ~l~~~~~ei~~~I~~~~~l~de~~~~L~~~i~~~~~~Fs 509 (509) T Consensus 481 y~~~~~~~~l~eI~~~k~l~ee~e~~lk~~l~~Fk~~f~ 519 (520) T TIGR00962 481 YLDANHPDILEEINTKKKLTEELEAKLKEALKEFKQTFA 519 (520) T ss_pred HHHCCHHHHHHHHHHCCCCCHHHHHHHHHHHHHHHHHHC T ss_conf 983351489999974078888899999999998887515

HHsearch alignment for GI: 254780617 and conserved domain: TIGR00962