ID   VATB_CYACA              Reviewed;         500 AA.
AC   P48413;
DT   01-FEB-1996, integrated into UniProtKB/Swiss-Prot.
DT   01-FEB-1996, sequence version 1.
DT   03-AUG-2022, entry version 91.
DE   RecName: Full=V-type proton ATPase subunit B;
DE            Short=V-ATPase subunit B;
DE   AltName: Full=Vacuolar proton pump subunit B;
OS   Cyanidium caldarium (Red alga).
OC   Eukaryota; Rhodophyta; Bangiophyceae; Cyanidiales; Cyanidiaceae; Cyanidium.
OX   NCBI_TaxID=2771;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=7619836; DOI=10.1016/0005-2728(95)00060-v;
RA   Ziegler K., Hauska G., Nelson N.;
RT   "Cyanidium caldarium genes encoding subunits A and B of V-ATPase.";
RL   Biochim. Biophys. Acta 1230:202-206(1995).
CC   -!- FUNCTION: Non-catalytic subunit of the peripheral V1 complex of
CC       vacuolar ATPase. V-ATPase is responsible for acidifying a variety of
CC       intracellular compartments in eukaryotic cells.
CC   -!- SUBUNIT: V-ATPase is a heteromultimeric enzyme composed of a peripheral
CC       catalytic V1 complex (main components: subunits A, B, C, D, E, and F)
CC       attached to an integral membrane V0 proton pore complex (main
CC       component: the proteolipid protein).
CC   -!- SIMILARITY: Belongs to the ATPase alpha/beta chains family.
CC       {ECO:0000305}.
CC   ---------------------------------------------------------------------------
CC   Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC   Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC   ---------------------------------------------------------------------------
DR   EMBL; U17101; AAA85821.1; -; Genomic_DNA.
DR   PIR; T14363; T14363.
DR   AlphaFoldDB; P48413; -.
DR   SMR; P48413; -.
DR   GO; GO:0033180; C:proton-transporting V-type ATPase, V1 domain; IEA:InterPro.
DR   GO; GO:0005524; F:ATP binding; IEA:InterPro.
DR   GO; GO:0046961; F:proton-transporting ATPase activity, rotational mechanism; IEA:InterPro.
DR   GO; GO:0046034; P:ATP metabolic process; IEA:InterPro.
DR   HAMAP; MF_00310; ATP_synth_B_arch; 1.
DR   InterPro; IPR020003; ATPase_a/bsu_AS.
DR   InterPro; IPR004100; ATPase_F1/V1/A1_a/bsu_N.
DR   InterPro; IPR000194; ATPase_F1/V1/A1_a/bsu_nucl-bd.
DR   InterPro; IPR005723; ATPase_V1-cplx_bsu.
DR   InterPro; IPR027417; P-loop_NTPase.
DR   InterPro; IPR022879; V-ATPase_su_B/beta.
DR   PANTHER; PTHR43389; PTHR43389; 1.
DR   Pfam; PF00006; ATP-synt_ab; 1.
DR   Pfam; PF02874; ATP-synt_ab_N; 1.
DR   PIRSF; PIRSF039114; V-ATPsynth_beta/V-ATPase_B; 1.
DR   SUPFAM; SSF52540; SSF52540; 1.
DR   TIGRFAMs; TIGR01040; V-ATPase_V1_B; 1.
DR   PROSITE; PS00152; ATPASE_ALPHA_BETA; 1.
PE   3: Inferred from homology;
KW   Hydrogen ion transport; Ion transport; Transport.
FT   CHAIN           1..500
FT                   /note="V-type proton ATPase subunit B"
FT                   /id="PRO_0000144640"
SQ   SEQUENCE   500 AA;  56434 MW;  4A882382EEEE9CF5 CRC64;
     MEAFNLHKKA VSRDYIVKPR LEYRTVSAVN GPLIILQNVK SPRFAEIVNV TLGDGSVRRG
     QVLEINQDKA VVQIFEGTTG IDNKKTVCQF TGEILKTPVS LDMLGRVFNG SGKPIDGGPP
     ILPEAYLDIQ GQPINPQSRT YPEEMFETGI SSIDVMNSIA RGQKIPLFSG AGLPHNEVAA
     QICRQVCLVS TCTLVKRSGK DEEDFAIVFA AMGVNMETAR FFRQDFEENG AMERVTLFLN
     LANDPTIERI ITPRLALTFA EYLAYEKGKH VLVILTDMSA YADALREVSA AREEVPGRRG
     YPGYMYTDLA TIYERAGRVE GRPGSITQLP ILTMPNDDIT HPIPDLTGYI TEEQIYLDRQ
     LHNRQIYPPI NVLPSLSRLM KSAIGEGMTR KDHSDVSNQL YAAYAMGKDA LAMRAVVGVE
     ALSQEDLLYL EFHDKFERRF VNQGAYERRD IYTSLDMAWD LLRIFPVQML RRIPEKILQE
     YYHRTSNYEH KENKPHSSRS