>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=1.4e-45 Score=318.29 Aligned_cols=354 Identities=20% Similarity=0.246 Sum_probs=278.1 Q ss_pred CCCCCCCHHHHHHHHHHHHHHCCCEE----EEEEE---EEEECCCCE--EE-EECCCCCCCCCCCCEEECCCCCCCCCCC Q ss_conf 88576667899999998752058748----99999---854047702--67-5045486666556046010000122125 Q gi|254780810|r 27 ENANVMRKQELMFSILKVLSGRDVEI----IGEGV---IEVLQDGFG--FL-RSPDANYLAGPDDIYVSPSQIKSFSLKT 96 (423) Q Consensus 27 e~~~~l~K~eLI~~Il~~~~~~~g~~----~~eGv---LEIl~dGyG--FL-R~~~~~yl~~~~DiyVs~slir~f~Lr~ 96 (423) T Consensus 52 E~T~G~~Pge~v~~tG~pLsveLGPGll~~iyDG~QRPL~~l~~~~~~~Fi~RGv~~p~l~~~~~w~F~P~v~~Gd~V~~ 131 (584) T TIGR01043 52 EETSGIKPGEPVERTGAPLSVELGPGLLGSIYDGVQRPLDVLKEKTGSDFIERGVDAPGLDRDKKWEFKPTVKEGDKVEG 131 (584) T ss_pred ECCCCCCCCCCHHCCCCEEEEECCCHHHHHHCCCCCCCHHHHHHHHCCHHHHCCCCCCCCCCCCCCEECCEECCCCEECC T ss_conf 32688898740002897027743500476640122463689998620137665851688875345002221226864347 Q ss_pred CCEEE-------EEEEECCCCCCCC-CCEEE--------CCCCCCCHHHHHCCCCHHHCCCCCCCCCCCCCCCCCCCCCH Q ss_conf 98799-------9886246888763-00022--------22556887885124430002000112234324778653213 Q gi|254780810|r 97 GDTVE-------GSIRAPREGERYF-ALLKV--------NAINFDVPERVRNKIHFDNLTPLYPDKRFNMELNNPENKDI 160 (423) Q Consensus 97 GD~V~-------g~~r~~~~~~~~~-~L~rV--------~~vnG~~~d~~~~~~~f~~l~p~~p~~~i~le~~~~~p~~~ 160 (423) T Consensus 132 Gd~~G~V~ET~~i~h~ilvPp~~~gg~~~~~~~G~ftV~d~i~~~~~~G~~~~~~m~~~WPVR~~RP~~~K~~P~~PL~t 211 (584) T TIGR01043 132 GDIIGVVQETSLIEHKILVPPNVEGGEIVEIAEGDFTVEDTIAVVEKDGEEEEIKMYQKWPVRKPRPYKEKLEPEEPLVT 211 (584) T ss_pred CCEEEEECCCCCEEEEEEECCCCCCCEEEEEECCCEEEEEEEEEEECCCCCCEEEEEEECCCCCCCCCCCCCCCCCCCCC T ss_conf 61587763765033477735745787577872673146556899822788110246440778888874357888986121 Q ss_pred HHHHHHHHHHHHCCCCEEEECCCCCCHHHHHHHHHHHHHHCCCCCEEEEEECCCCHHHHHHHHHHH-------------- Q ss_conf 688899886551023122204877878999999999986118864699995087878999999840-------------- Q gi|254780810|r 161 SSRVIDLIAPIGKGQRSLIVAPPRTGKTILLQNIAHSIKKNHPECYLIVLLIDERPEEVTDMQRSV-------------- 226 (423) Q Consensus 161 ~~~~id~~~pig~gqr~~i~~~~~~gkt~ll~~ia~~~~~~~~~v~~i~~ligEr~~ev~e~~~~~-------------- 226 (423) T Consensus 212 G~R~~Dt~F~~AKGGTAAiPGPFGsGKTVT~~~LAkws~a~----ivvYiGCGERGNEMt~vl~~FP~l~dp~TG~pLm~ 287 (584) T TIGR01043 212 GQRILDTLFPIAKGGTAAIPGPFGSGKTVTQQQLAKWSDAD----IVVYIGCGERGNEMTEVLEEFPELEDPKTGKPLME 287 (584) T ss_pred CCCHHHCCCCCCCCCCCCCCCCCCCCCHHHHHHHHHHHCCC----EEEEECCCCCCCHHHHHHHHCCCCCCCCCCHHHHH T ss_conf 50341010242467754578788885046777775430473----79996168875258999984878688635315654 Q ss_pred CCEEEECCCCCCHHHHHHHHHHHHHHHHHHHHCCCCEEEEEECHHHHHHHHHCCCCCCCCCCCCCCCHHHH-HHCHHHHH Q ss_conf 34278236678888999999999999999997799289998163898776200136677767775202466-50468752 Q gi|254780810|r 227 QGEVISSTFDESAARHVQVAEMVIAKAKCLVEYGLDVVILLDSITRLCRAYNVLMPSSGKILTGGVDANAL-QRPKRFFG 305 (423) Q Consensus 227 ~~~vv~st~d~~~~~~~~~a~~a~~~a~~~~e~G~dVll~~DslTR~ArA~~~~~~~~g~~~~gg~~~~~l-~~~~~~~~ 305 (423) T Consensus 288 RT~LiANTSNMPVAAREas~Y~GiTiAEYfRD~GYdv~L~ADSTSRWAEA~ReisgRlEEMPgEEGyPaYLasrLaefYE 367 (584) T TIGR01043 288 RTVLIANTSNMPVAAREASIYTGITIAEYFRDMGYDVALMADSTSRWAEALREISGRLEEMPGEEGYPAYLASRLAEFYE 367 (584) T ss_pred CCEEEECCCCCCHHHHHHHHHHCCHHHHHHHCCCCCEEEEECCCCHHHHHHHHHHHHHCCCCCCCCCHHHHHHHHHHHHH T ss_conf 20533526787534401123211025334411685168872475217899987520210277878862468888877665 Q ss_pred CCCCCC------CCCCCEEEEEEEECCCCCCCCHHHHHHHHCCCCEEEEEHHHHHCCCCCCCCCCCCCCCCHHHCCC--H Q ss_conf 257777------77850012112012676554138898852266078980878847999740533542210155199--9 Q gi|254780810|r 306 AARNIK------EGGSLTIIGTALVDTGSRMDEVIFEEFKGTGNSEIVLERKIADKRIFPAMDIIKSGTRKEDLLVE--R 377 (423) Q Consensus 306 ~ar~~~------~~Gs~T~~~t~lvetg~~~d~~i~~~~~~~~d~~i~L~r~la~~~~~PAId~~~S~sR~~~~l~~--~ 377 (423) T Consensus 368 RAG~~~~l~~~~~~gsv~v~gAVSPP-GGDfsEPVt~~TlR~vkvFWaLD~~La~~RHfPaInW~~sySlY~d~~~~W~~ 446 (584) T TIGR01043 368 RAGRVKTLGGEEREGSVTVVGAVSPP-GGDFSEPVTQNTLRIVKVFWALDAKLAQRRHFPAINWLQSYSLYVDSVQDWWA 446 (584) T ss_pred HCCEEEECCCCCCEEEEEEEECCCCC-CCCCCCCCCCCCEEEEEEECCCCHHHHHCCCCCCCCHHHHHHHHHHHHHHHHH T ss_conf 14602231688744789999614775-57878862227447898730011788743789730201145776888999987 Q ss_pred HHHHHHHH Q ss_conf 99999999 Q gi|254780810|r 378 QDLQKVFM 385 (423) Q Consensus 378 ~~~~~~~~ 385 (423) T Consensus 447 ~Nv~~~w~ 454 (584) T TIGR01043 447 ENVDPDWR 454 (584) T ss_pred HHHHHHHH T ss_conf 40027799

HHsearch alignment for GI: 254780810 and conserved domain: TIGR01043