>TIGR01043 ATP_syn_A_arch ATP synthase archaeal, A subunit; InterPro: IPR005726 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. A-ATPases (or A1A0-ATPase) (3.6.3.14 from EC) are found exclusively in Archaea and display a close resemblance in structure and subunit composition with V-ATPases, although their function in both ATP synthesis and ATP hydrolysis is closer to that of F-ATPases . A-ATPases are composed of two linked complexes: the A1 complex consisting of seven subunits contains the catalytic core that synthesizes/hydrolyses ATP, while the A0 complex consisting of at least two subunits forms the membrane-spanning pore . The rotary motor in A-ATPases is composed of only two subunits, the stator subunit I and the rotor subunit C . A-ATPases may have arisen as an adaptation to the different cellular needs and the more extreme environmental conditions faced by Archaeal species. This entry represents the alpha subunit from the A1 complex of A-ATPases. The A1 complex contains three copies each of subunits alpha (or A) and beta (or B) (IPR005724 from INTERPRO), both of which form the headpiece that participates in nucleotide binding. However, only the alpha subunit is catalytic, the beta subunit being regulatory in function . 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, 0016021 integral to membrane, 0016469 proton-transporting two-sector ATPase complex.

Probab=100.00 E-value=0 Score=534.20 Aligned_cols=460 Identities=23% Similarity=0.330 Sum_probs=378.6 Q ss_pred EEEEEEEECCEEEEECCCCCCCCCEEEEC-CCEEEEEEEECCCEEEEEEECCCCCCCCCCEEEECCCEEEEECCHHHHHC Q ss_conf 35899982758999758887737479957-98189999205985999980586686789888977987886679469830 Q gi|254780617|r 28 IGRVLSIGDGIARVYGLNNIRAGEMVQFS-HGVYGMALNLEVDNVGVVILGSYKEISEGDIVKRTGRIVDVPVGLELLGR 106 (509) Q Consensus 28 ~G~V~~V~~giv~v~GL~~a~~GElv~~~-~g~~G~Vi~l~~d~v~i~~l~~~~gI~~G~~V~~tg~~~~vpvG~~lLGR 106 (509) T Consensus 2 ~G~i~~~~GP~v~A~g~~~a~My~~v~Vg~~~L~GEi~~~~gd~~~IQVYE~T~G~~Pge~v~~tG~pLsveLGPGll~~ 81 (584) T TIGR01043 2 KGEIVRVSGPLVVAEGLKGAQMYEVVKVGEEGLIGEIIRIEGDKAVIQVYEETSGIKPGEPVERTGAPLSVELGPGLLGS 81 (584) T ss_pred CCEEEEEECCEEEECCCCCCCEEEEEEECCCCCEEEEEEEECCEEEEEEEECCCCCCCCCCHHCCCCEEEEECCCHHHHH T ss_conf 85389975788782455766324335670785036899982776899986326888987400028970277435004766 Q ss_pred CCCHHHCCCCCC-------------------------------------------------------------------- Q ss_conf 003002314466-------------------------------------------------------------------- Q gi|254780617|r 107 VVDALGNPIDGK-------------------------------------------------------------------- 118 (509) Q Consensus 107 VvD~lG~PlDg~-------------------------------------------------------------------- 118 (509) T Consensus 82 iyDG~QRPL~~l~~~~~~~Fi~RGv~~p~l~~~~~w~F~P~v~~Gd~V~~Gd~~G~V~ET~~i~h~ilvPp~~~gg~~~~ 161 (584) T TIGR01043 82 IYDGVQRPLDVLKEKTGSDFIERGVDAPGLDRDKKWEFKPTVKEGDKVEGGDIIGVVQETSLIEHKILVPPNVEGGEIVE 161 (584) T ss_pred HCCCCCCCHHHHHHHHCCHHHHCCCCCCCCCCCCCCEECCEECCCCEECCCCEEEEECCCCCEEEEEEECCCCCCCEEEE T ss_conf 40122463689998620137665851688875345002221226864347615877637650334777357457875778 Q ss_pred ---------------------CCCCCCCCCHHCCCCCCCCCCCCCHHHHHCCHHHHHCCCCCCCCCEEEEECCCCCCCHH Q ss_conf ---------------------44454441001013577311266001444160233101111568336552477886115 Q gi|254780617|r 119 ---------------------GPIKCEQRSCTEADAPGIIQRQSVCEPLSTGIKAIDSLIPIGRGQRELIIGDRKTGKTS 177 (509) Q Consensus 119 ---------------------g~i~~~~~~~i~~~~p~~~~R~~i~~~l~TGI~~ID~l~pigrGQR~~I~g~~g~GKt~ 177 (509) T Consensus 162 ~~~G~ftV~d~i~~~~~~G~~~~~~m~~~WPVR~~RP-~~~K~~P~~PL~tG~R~~Dt~F~~AKGGTAAiPGPFGsGKTV 240 (584) T TIGR01043 162 IAEGDFTVEDTIAVVEKDGEEEEIKMYQKWPVRKPRP-YKEKLEPEEPLVTGQRILDTLFPIAKGGTAAIPGPFGSGKTV 240 (584) T ss_pred EECCCEEEEEEEEEEECCCCCCEEEEEEECCCCCCCC-CCCCCCCCCCCCCCCCHHHCCCCCCCCCCCCCCCCCCCCCHH T ss_conf 7267314655689982278811024644077888887-435788898612150341010242467754578788885046 Q ss_pred HHHHHHHHHHHHCCCCCCCCCCEEEEEECCCCHHHHHHHHHHHCC-------CCCCCEEEEEEECCCCCHHHHHHHHHHH Q ss_conf 899999998863024667876069999516776789999985114-------6742115899728878889999988766 Q gi|254780617|r 178 IILDTFLNQKSSHDKGSEKDKVYCIYVAIGQKRSSVARFVKALED-------RGALSYSIVVVASASDPAPMQLLAPFAG 250 (509) Q Consensus 178 l~~~~I~nq~~~~~~~~~~~~v~~V~~~IGer~~ev~~~~~~l~~-------~~~~~~tvvv~a~a~~~~~~r~~ap~~a 250 (509) T Consensus 241 T~----------~~LAkws~a~ivvYiGCGERGNEMt~vl~~FP~l~dp~TG~pLm~RT~LiANTSNMPVAAREas~Y~G 310 (584) T TIGR01043 241 TQ----------QQLAKWSDADIVVYIGCGERGNEMTEVLEEFPELEDPKTGKPLMERTVLIANTSNMPVAAREASIYTG 310 (584) T ss_pred HH----------HHHHHHHCCCEEEEECCCCCCCHHHHHHHHCCCCCCCCCCHHHHHCCEEEECCCCCCHHHHHHHHHHC T ss_conf 77----------77754304737999616887525899998487868863531565420533526787534401123211 Q ss_pred HHHHHHHHCCCCCEEEEEECHHHHHHHHHHHHHHCCCCCCCCCCCCCCHHHHHHHHHHHHHCCC---CCCCCCEEEEEEE Q ss_conf 6666754204688479961647899999875453037875433375200124678888750454---4588735675310 Q gi|254780617|r 251 CAMGEYFRDNGYHALIAYDDLQKHAVAYRQLSLLLRRPPGREAYPGDVFYLHSRLLERAAKMSD---ALGAGSLTALPVI 327 (509) Q Consensus 251 ~aiAEyfr~~G~~VLi~~Ddltr~A~a~reisl~~~~pp~~~gyp~~vf~~~s~l~ERa~~~~~---~~g~GSiT~~~~v 327 (509) T Consensus 311 iTiAEYfRD~GYdv~L~ADSTSRWAEA~ReisgRlEEMPgEEGyPaYLasrLaefYERAG~~~~l~~~~~~gsv~v~gAV 390 (584) T TIGR01043 311 ITIAEYFRDMGYDVALMADSTSRWAEALREISGRLEEMPGEEGYPAYLASRLAEFYERAGRVKTLGGEEREGSVTVVGAV 390 (584) T ss_pred CHHHHHHHCCCCCEEEEECCCCHHHHHHHHHHHHHCCCCCCCCCHHHHHHHHHHHHHHCCEEEECCCCCCEEEEEEEECC T ss_conf 02533441168516887247521789998752021027787886246888887766514602231688744789999614 Q ss_pred ECCCCCCCCCHHHHHHHHHCCEEEEECCHHHHCCCCCCCCCCCHHHCCCCCCCHHHHHHH-------HHHHHHHHHHHHH Q ss_conf 036766443114668854061699615012210266543344412203434389887755-------6788879988767 Q gi|254780617|r 328 ETQVNDVSAYIPTNVISITDGQIFLETELFYQGIRPAINIGLSVSRVGSAAQVKAMKQVS-------GAVKGELAQYREM 400 (509) Q Consensus 328 ~~~~~D~~~~i~~~~~si~DG~i~l~~~l~~~g~~Paid~~~S~SRv~~~~~~~~~~~~a-------~~lr~~laqy~El 400 (509) T Consensus 391 SPPGGDfsEPVt~~TlR~vkvFWaLD~~La~~RHfPaInW~~sySlY~d~~~~W~~~Nv~~~w~~~R~~a~~~L~~E~eL 470 (584) T TIGR01043 391 SPPGGDFSEPVTQNTLRIVKVFWALDAKLAQRRHFPAINWLQSYSLYVDSVQDWWAENVDPDWRELRDEAMDLLQKEAEL 470 (584) T ss_pred CCCCCCCCCCCCCCCEEEEEEECCCCHHHHHCCCCCCCCHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH T ss_conf 77557878862227447898730011788743789730201145776888999987400277999999999997515567 Q ss_pred HHHHHH-HCC-CCHHHHHHHHHHHHHHH-HHCCCCCCCC----CHHHHHHHHHHHHC-------CCCCCCCHHHHHHHHH Q ss_conf 879876-338-99899999999999999-9669998874----88999999999866-------9806679899999999 Q gi|254780617|r 401 SSFSKF-SSD-LDSSTQKFLSKGERLTE-LLKQPQFSPL----AMEEQVVMIFAGIS-------GCLDEVAVSQVRKFET 466 (509) Q Consensus 401 e~f~~f-gsd-lD~~t~~~l~rg~ri~e-~LkQ~~~~p~----~~~~qv~~l~a~~~-------G~ld~i~v~~I~~fe~ 466 (509) T Consensus 471 ~eIV~LVG~d~L~~~~~~~Le~ar~~re~fL~q~Af~~vD~y~~~~kq~~~l~~I~~~~~~~~~~~~~G~~~~~I~~~~g 550 (584) T TIGR01043 471 QEIVQLVGPDALPEKEKLILEVARLIREAFLQQNAFDEVDTYCSPQKQYRILKAIMKFNDEALEALEKGVPVKEILKLEG 550 (584) T ss_pred HHHHHHCCCCCCCHHHHHHHHHHHHHHHHHHHHHCCCHHHCCCCHHHHHHHHHHHHHHHHHHHHHHHCCCCHHHHHHHHH T ss_conf 77875317756760245789999999998766520430103588688999999999999999999873886789863210 Q ss_pred HHHHHHHHHHHHHHHHHHHCCCC-C-HHHHHHHHHHHHHHHHHCC Q ss_conf 99999974159999988732798-9-8999999999999985159 Q gi|254780617|r 467 NFLSHMRVSSQDILEDIRKQKVL-T-DDIRSKLINEIKVFLEDFN 509 (509) Q Consensus 467 ~l~~~l~~~~~ei~~~I~~~~~l-~-de~~~~L~~~i~~~~~~Fs 509 (509) T Consensus 551 ~~~-----------~~~~r~k~~~~~~~~~~~~~~~~~~~~~~~~ 584 (584) T TIGR01043 551 RVK-----------EEIARVKYEEDNEKEEAKIDEIKEKIKKELK 584 (584) T ss_pred HHH-----------HHHHHHCCCCHHHHHHHHHHHHHHHHHHHCC T ss_conf 357-----------7888722551045788999999999998619

HHsearch alignment for GI: 254780617 and conserved domain: TIGR01043