>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=612.79 Aligned_cols=410 Identities=24% Similarity=0.350 Sum_probs=362.3 Q ss_pred EEEEEEEECCEEEEECCCCCCCCCCEEEEECCCCCEEEEEEEECCCEEEEEECCCCCCCCCCCEEEECCC-CEEECCHHH Q ss_conf 1289999525899982688887351899956996079999974199799998048557467888997288-555246668 Q gi|254780684|r 23 GGYISSITSVYYTVTCLSQYVCLGDFVVHQGKNSDNLGQVIRINLDIVYICPVGIGEEISLGDLVFHWGR-FRISPSACW 101 (438) Q Consensus 23 ~G~V~~V~G~ii~v~Gl~~~v~iGelv~i~~~~~~v~geVi~~~~~~~~l~~~~~~~gI~~G~~V~~~g~-~~i~vG~~l 101 (438) T Consensus 2 ~G~i~~~~GP~v~A~g~~-~a~My~~v~V--g~~~L~GEi~~~~gd~~~IQVYE~T~G~~Pge~v~~tG~pLsveLGPGl 78 (584) T TIGR01043 2 KGEIVRVSGPLVVAEGLK-GAQMYEVVKV--GEEGLIGEIIRIEGDKAVIQVYEETSGIKPGEPVERTGAPLSVELGPGL 78 (584) T ss_pred CCEEEEEECCEEEECCCC-CCCEEEEEEE--CCCCCEEEEEEEECCEEEEEEEECCCCCCCCCCHHCCCCEEEEECCCHH T ss_conf 853899757887824557-6632433567--0785036899982776899986326888987400028970277435004 Q ss_pred HHHHHHHHHHHCC------------------------------------------------------------------- Q ss_conf 8654307763047------------------------------------------------------------------- Q gi|254780684|r 102 CGRVINALGKPID------------------------------------------------------------------- 114 (438) Q Consensus 102 LGRViD~lG~PlD------------------------------------------------------------------- 114 (438) T Consensus 79 l~~iyDG~QRPL~~l~~~~~~~Fi~RGv~~p~l~~~~~w~F~P~v~~Gd~V~~Gd~~G~V~ET~~i~h~ilvPp~~~gg~ 158 (584) T TIGR01043 79 LGSIYDGVQRPLDVLKEKTGSDFIERGVDAPGLDRDKKWEFKPTVKEGDKVEGGDIIGVVQETSLIEHKILVPPNVEGGE 158 (584) T ss_pred HHHHCCCCCCCHHHHHHHHCCHHHHCCCCCCCCCCCCCCEECCEECCCCEECCCCEEEEECCCCCEEEEEEECCCCCCCE T ss_conf 76640122463689998620137665851688875345002221226864347615877637650334777357457875 Q ss_pred ---------------------CC-CCCCCCCEEEEECCCCCCCCCCCCCCCCHHHHHHHHHHHHHHCCCCEEEEECCCCC Q ss_conf ---------------------88-77755530121125433300013311001112458752002235850375266788 Q gi|254780684|r 115 ---------------------GD-DSLGKGDLSMEIMSKVPPAMNRQRVEKGFKTGIRVIDIFTPLCHGQRIGVFAGSGI 172 (438) Q Consensus 115 ---------------------g~-~~l~~~~~~~~i~~~~p~p~~R~~i~e~L~TGIr~ID~l~pig~GQR~gIfg~~Gv 172 (438) T Consensus 159 ~~~~~~G~ftV~d~i~~~~~~G~~~~~~-m~~~WPVR~~R-P~~~K~~P~~PL~tG~R~~Dt~F~~AKGGTAAiPGPFGs 236 (584) T TIGR01043 159 IVEIAEGDFTVEDTIAVVEKDGEEEEIK-MYQKWPVRKPR-PYKEKLEPEEPLVTGQRILDTLFPIAKGGTAAIPGPFGS 236 (584) T ss_pred EEEEECCCEEEEEEEEEEECCCCCCEEE-EEEECCCCCCC-CCCCCCCCCCCCCCCCCHHHCCCCCCCCCCCCCCCCCCC T ss_conf 7787267314655689982278811024-64407788888-743578889861215034101024246775457878888 Q ss_pred CHHHHHHHHHHHCCCCCEEEEECCCCCHHHHHHHHHHH--C---CC---CCCEEEEEECCCCCHHHHHHHHHHHHHHHHH Q ss_conf 99999999874078983899312465223889999864--2---77---5532898415778803444444567778888 Q gi|254780684|r 173 GKSTLLSMFARSDCFDKVIISLVGERGREVREFIEDYL--G---DN---LKKSVVVVATSDESPILRKMAPLTAVTIAEY 244 (438) Q Consensus 173 GKt~Ll~~i~~~~~~dv~V~alIGeR~rev~efi~~~~--~---~~---l~~tvvv~~t~d~~~~~r~~a~~~a~~iAEy 244 (438) T Consensus 237 GKTVT~~~LAkws~a~ivvYiGCGERGNEMt~vl~~FP~l~dp~TG~pLm~RT~LiANTSNMPVAAREas~Y~GiTiAEY 316 (584) T TIGR01043 237 GKTVTQQQLAKWSDADIVVYIGCGERGNEMTEVLEEFPELEDPKTGKPLMERTVLIANTSNMPVAAREASIYTGITIAEY 316 (584) T ss_pred CCHHHHHHHHHHHCCCEEEEECCCCCCCHHHHHHHHCCCCCCCCCCHHHHHCCEEEECCCCCCHHHHHHHHHHCCHHHHH T ss_conf 50467777754304737999616887525899998487868863531565420533526787534401123211025334 Q ss_pred HHHCCCCEEEEEECHHHHHHHHHHHHHHCCCCCCCCCCCHHHHHHCCHHHHHHHCC-----CCCCCCEEEEEEEEECCCC Q ss_conf 64267988999709899999987665404778432366324554200444443113-----6788523554333421676 Q gi|254780684|r 245 FSSKGDNVLLILDSITRFAHSIREIATNSGELPVARGYPTSVFSELPRLLERIGPS-----EKEKGNITAVISVLVDGDN 319 (438) Q Consensus 245 fr~~G~~Vll~~Ds~tr~a~A~reis~~~ge~P~~~gyp~~~~~~~~~l~ERag~~-----~~~~GSiT~~~~v~~~~dd 319 (438) T Consensus 317 fRD~GYdv~L~ADSTSRWAEA~ReisgRlEEMPgEEGyPaYLasrLaefYERAG~~~~l~~~~~~gsv~v~gAVSPPGGD 396 (584) T TIGR01043 317 FRDMGYDVALMADSTSRWAEALREISGRLEEMPGEEGYPAYLASRLAEFYERAGRVKTLGGEEREGSVTVVGAVSPPGGD 396 (584) T ss_pred HHCCCCCEEEEECCCCHHHHHHHHHHHHHCCCCCCCCCHHHHHHHHHHHHHHCCEEEECCCCCCEEEEEEEECCCCCCCC T ss_conf 41168516887247521789998752021027787886246888887766514602231688744789999614775578 Q ss_pred CCCHHHHHHHHHCCCEEEEEHHHHHCCCCCCCCCCCCCCCCCHHC-------CCHHHHHHHHHHHHHHHHHHHHHHHHHH Q ss_conf 420278999861260898704277589713114456400022120-------8999999999999999999999999985 Q gi|254780684|r 320 HNDPIADSVRSILDGHIVLNRSLAEEGRYPPVDPLASVSRLADKA-------WSADEKKLVSSLTHLIHRFEETRDIRLI 392 (438) Q Consensus 320 ~~~pi~~~~~~i~DG~i~L~r~la~~g~~Paid~~~S~SR~~~~~-------~~~~~~~~~~~~~~~l~~y~~~~~l~~~ 392 (438) T Consensus 397 fsEPVt~~TlR~vkvFWaLD~~La~~RHfPaInW~~sySlY~d~~~~W~~~Nv~~~w~~~R~~a~~~L~~E~eL~eIV~L 476 (584) T TIGR01043 397 FSEPVTQNTLRIVKVFWALDAKLAQRRHFPAINWLQSYSLYVDSVQDWWAENVDPDWRELRDEAMDLLQKEAELQEIVQL 476 (584) T ss_pred CCCCCCCCCEEEEEEECCCCHHHHHCCCCCCCCHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH T ss_conf 78862227447898730011788743789730201145776888999987400277999999999997515567778753 Q ss_pred HCCCCCCCHHHHHHHHHHHHHHH-HHCCCCCCC-CCHHHHHHHHHHCC Q ss_conf 23446999899999999999999-835998889-99768999998709 Q gi|254780684|r 393 GGYRPGVDLILDKAVHQVPIIYD-FLKQSPSDL-SSEDVFQEITKKLQ 438 (438) Q Consensus 393 g~y~~g~d~~~d~~i~~~~~i~~-fl~Q~~~e~-~~~~~~~~~~~~l~ 438 (438) T Consensus 477 VG-~d~L~~~~~~~Le~ar~~re~fL~q~Af~~vD~y~~~~kq~~~l~ 523 (584) T TIGR01043 477 VG-PDALPEKEKLILEVARLIREAFLQQNAFDEVDTYCSPQKQYRILK 523 (584) T ss_pred CC-CCCCCHHHHHHHHHHHHHHHHHHHHHCCCHHHCCCCHHHHHHHHH T ss_conf 17-756760245789999999998766520430103588688999999

HHsearch alignment for GI: 254780684 and conserved domain: TIGR01043