>TIGR01041 ATP_syn_B_arch ATP synthase archaeal, B subunit; InterPro: IPR005724 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 beta subunit from the A1 complex of A-ATPases. The A1 complex contains three copies each of subunits alpha (or A) (IPR005726 from INTERPRO), and beta (or B), 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: 0046933 hydrogen ion transporting ATP synthase activity rotational mechanism, 0046961 hydrogen ion transporting ATPase activity rotational mechanism, 0015986 ATP synthesis coupled proton transport, 0016021 integral to membrane, 0016469 proton-transporting two-sector ATPase complex.

Probab=100.00 E-value=0 Score=479.14 Aligned_cols=429 Identities=27% Similarity=0.383 Sum_probs=384.0 Q ss_pred CEEEEEEECCEEEEEECCCCCCCCCEEEEC-CCCCEEEEEEEEEECCCEEEEEECCCCCCCCCCC-EEEECCCEEEEECC Q ss_conf 138999955789998166652314189981-6995599999987089879999814878887888-88977984898859 Q gi|254780615|r 10 VGRIQQIMGAVVDVVFVNSLPPIFSSLETS-DKGSRIVFEVVQHLGEKTVRCIAMSRTDGLSRGD-CVIDTGTQITVPVG 87 (478) Q Consensus 10 ~GrV~~V~G~vvev~g~~~~~~i~~~i~~~-~~g~~i~~EVV~~l~e~~V~~i~l~~t~GI~~G~-~V~~tg~~l~VpVG 87 (478) T Consensus 2 y~~~~~~~GPl~~v~~~~~~-~y~e~v~~~~~~G~~~~G~vl~-~~~~~~~~~~~~g~~~~~~~~~~v~~~G~~~~~~~~ 79 (458) T TIGR01041 2 YKTITEIKGPLVIVEGVEPV-AYDEIVEIETPDGEKRRGQVLD-SSEGLAVVQVFEGTTGLDKEATKVRFLGETLKLPVS 79 (458) T ss_pred CCCCCCCCCCEEEEECCCCC-CCEEEEEEECCCCCCCCCCEEE-CCCCEEEEEEECCHHCCCCCCCEEEEECCEEEEHHH T ss_conf 65410103756898424321-2100156640578742340353-037657988521110112234178984130242010 Q ss_pred HHHHHHHHHHHHHHCCCCCCCCCHHHHCCCCCCCCCHHHCCCCCCCCCCCCCCCCCCCCCCCCCEECCCCCCCCHHHHHH Q ss_conf 23765588787523016787530011002345444100001342000231100235570215410036756666248999 Q gi|254780615|r 88 EATLGRIMNVIGEPVDDQGAIISSEKRAIHQPSPSYTEQSTDASILTTGIKVIDLISPYQKGGKIGLFGGAGVGKTVLIM 167 (478) Q Consensus 88 ~~lLGRViD~lG~PLDg~g~i~~~~~~pi~~~~p~~~~R~~i~e~L~TGIkaID~l~pig~Gqr~gIfgg~GvGKT~l~~ 167 (478) T Consensus 80 ~~~lGr~~~g~G~~~d~GP~~~~~~~~~~~G~~~nP~~r~~P~~fiqtG~s~idG~n~l~rG~kl~~fs~sGlP~~~la~ 159 (458) T TIGR01041 80 EDLLGRILNGSGEPIDGGPEIVPDERRDINGAALNPAAREYPEEFIQTGISAIDGMNTLVRGQKLPIFSGSGLPHNELAA 159 (458) T ss_pred HHHHHHHHHCCCCCCCCCCCCCCCCHHCCCCCCCCCHHHCCCHHHHHHCHHHHHHHHHHHCCCCCCEECCCCCCHHHHHH T ss_conf 78888885026775567765243200023565458432204157875110243212454325421100036887778999 Q ss_pred HHHHHHHHC---CCCCEEEEEECCCHHHHHHHHHHHHHCCCCCCCCCCCCCCCCCEEEEEEECCCCCHHHHHHHHHHHHH Q ss_conf 999988505---78852687621643459999998542442001222344433231699971766896787777777877 Q gi|254780615|r 168 ELINNVAKA---HGGYSVFAGVGERTREGNDLYHEMIDSKVNIDPRKNNGSAVGSKCSLLYGQMNEPPGARSRVALTGLT 244 (478) Q Consensus 168 ~~i~n~~~~---~~~v~V~~~iGER~rEv~e~~~e~~~~~~~~~~~~~~~~~~~~~tv~v~~~~~~~~~~r~~~~~~a~t 244 (478) T Consensus 160 qia~qa~v~~~~~~favvf~a~G~~~~~~~~f~~~f~~------------tGal~r~~~~~~la~~P~~~~~~tP~~alt 227 (458) T TIGR01041 160 QIARQAKVRGEESEFAVVFAAMGITYEEANFFMKDFER------------TGALERAVVFLNLADDPAVERIVTPRMALT 227 (458) T ss_pred HHHHHHCCCCCCCCEEEEEHHHCCCHHHHHHHHHHHHH------------CCCHHHHEEEEEECCCCCHHHHHHHHHHHH T ss_conf 98863101235532143301022436889999998864------------043211002332026731123310367888 Q ss_pred HHHHHHH-CCCCEEEEEECHHHHHHHHHHHHHHHCCCCHHHHCCHHHHHHHHHHHHHHCCC--CCCCEEEEEEEEECCCC Q ss_conf 6899986-69967999715599987601245531144101101223566657888763177--76532566654304766 Q gi|254780615|r 245 VAEHFRD-QGQDVLFFVDNIFRFTQANSEISALLGRIPSAVGYQSTLALEMGELQERITTT--LKGSITSVQAIYVPADD 321 (478) Q Consensus 245 iAEyfrd-~g~dVll~~Dsltr~a~A~rEisl~~g~~P~~~gYp~~~f~~~~~l~ERag~~--~~GSIT~~~tV~~~~dD 321 (478) T Consensus 228 ~aeyla~~~d~hvl~il~d~tny~ealr~~~aar~evPGr~GyPGy~y~dla~~yeraG~~~G~~G~~tq~Pil~mP~dd 307 (458) T TIGR01041 228 LAEYLAFEKDMHVLVILTDMTNYCEALREISAAREEVPGRRGYPGYMYTDLATLYERAGRVKGKKGSITQIPILTMPGDD 307 (458) T ss_pred HHHHHHHCCCCEEEEEHHHHHHHHHHHHHHHHHHHHCCCCCCCCCHHHHHHHHHHHHHCEEECCCCCEEEEEEEECCCCC T ss_conf 99987630676466405557789999987643444078888987237888999987506021476534530034258877 Q ss_pred CCCHHHHHHHHHCCCEEEEEHHHHHCCCCCCCCCCCCCCCCCCCEE----CCHHHHHHHHHHHHHHHHHHHHHHHHHHHC Q ss_conf 4410589999750342564115663188675322355431116201----289999999999999998998999999736 Q gi|254780615|r 322 LTDPAPATSFTHLDATTVLSRQISEKGIYPAIDPLDSNSSMLEIDI----VGQEHYDVARRVQEILQRYKSLQDIIAILG 397 (478) Q Consensus 322 ~~dpi~~~~~si~Dg~ivLsr~la~~g~~PAId~~~S~Sr~~~~~i----~~~~h~~~a~~~r~~l~~y~el~~~i~~~g 397 (478) T Consensus 308 ~thPiPdl~GyiteGqi~~~r~l~~~Gi~PP~~~l~slsrl~~~G~G~G~tr~dh~~~~~q~ya~ya~~~~~r~l~~~vG 387 (458) T TIGR01041 308 ITHPIPDLTGYITEGQIVLSRELHRKGIYPPINVLPSLSRLMKDGIGEGKTREDHKDVSDQLYAAYAEGRDLRDLVAIVG 387 (458) T ss_pred CCCCCCCCCCEEECCEEEEEEHHHHCCCCCCHHHHHHHHHHHHCCCCCCCCHHHHHHHHHHHHHHHHHHHHHHHHHHHHH T ss_conf 65777643330113534673026517898816788899999743678887424589999888876752456888999860 Q ss_pred CCCCCHHHHHHHHHHHHHH-HHHCCCCCEEECCCCCCCEEECHHHHHHHHHHHHCCCCCCCCHHHHHHCC Q ss_conf 5569988999999999999-98349971100005789736159999999999976764468978976418 Q gi|254780615|r 398 MDELSEEDKLVVARARKLE-RFMSQPFHVAESFTGLPGKFVSLEETIRGFKGLVQGEYDHLPELAFYMVG 466 (478) Q Consensus 398 ~~~l~~~~~~~i~r~~~i~-~fL~Qp~~~~e~ft~~~g~~v~~~eti~~~~~il~g~~d~~pe~~~~~~g 466 (478) T Consensus 388 ~~~l~~~d~~~l~fa~~fe~~f~~qg~~~~r----------~i~~tl~~~W~~l~----~lP~~~l~~~~ 443 (458) T TIGR01041 388 EEALSERDRKYLKFADEFERKFVKQGRKEDR----------SIEETLDLGWELLS----VLPESELKRVK 443 (458) T ss_pred HHHHHHHHHHHHHHHHHHHHHHHHHHHHHCH----------HHHHHHHHHHHHHH----HCCHHHHHHHH T ss_conf 2455577899999999999999863332010----------17889988899998----51288998999

HHsearch alignment for GI: 254780615 and conserved domain: TIGR01041