ID   ATPZ_RHOCA              Reviewed;         114 AA.
AC   O05329;
DT   30-MAY-2006, integrated into UniProtKB/Swiss-Prot.
DT   01-JUL-1997, sequence version 1.
DT   25-MAY-2022, entry version 51.
DE   RecName: Full=ATP synthase protein I;
GN   Name=atpI;
OS   Rhodobacter capsulatus (Rhodopseudomonas capsulata).
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Rhodobacterales;
OC   Rhodobacteraceae; Rhodobacter.
OX   NCBI_TaxID=1061;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   STRAIN=ATCC 33303 / B10;
RX   PubMed=9818357; DOI=10.1007/s002030050657;
RA   Borghese R., Turina P., Lambertini L., Melandri B.A.;
RT   "The atpIBEXF operon coding for the Fo sector of the ATP synthase from the
RT   purple nonsulfur photosynthetic bacterium Rhodobacter capsulatus.";
RL   Arch. Microbiol. 170:385-388(1998).
RN   [2]
RP   SUBUNIT, AND SUBCELLULAR LOCATION.
RC   STRAIN=GA;
RA   Gabellini N., Gao Z., Eckerskorn C., Lottspeich F., Oesterhelt D.;
RT   "Purification of the H+-ATPase from Rhodobacter capsulatus, identification
RT   of the F1F0 components and reconstitution of the active enzyme.";
RL   Biochim. Biophys. Acta 934:227-234(1988).
CC   -!- FUNCTION: A possible function for this protein is to guide the assembly
CC       of the membrane sector of the ATPase enzyme complex.
CC   -!- SUBUNIT: F-type ATPases have 2 components, CF(1) - the catalytic core
CC       - and CF(0) - the membrane proton channel. CF(1) has five subunits:
CC       alpha(3), beta(3), gamma(1), delta(1), epsilon(1). CF(0) has four main
CC       subunits: a, b, b' and c. {ECO:0000269|Ref.2}.
CC   -!- SUBCELLULAR LOCATION: Cellular chromatophore membrane
CC       {ECO:0000269|Ref.2}; Multi-pass membrane protein {ECO:0000269|Ref.2}.
CC   -!- SIMILARITY: Belongs to the bacterial AtpI family. {ECO:0000305}.
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DR   EMBL; Y12313; CAA72980.1; -; Genomic_DNA.
DR   AlphaFoldDB; O05329; -.
DR   SMR; O05329; -.
DR   TCDB; 1.A.77.2.7; the mg(2+)/ca(2+) uniporter (mcu) family.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   GO; GO:0042717; C:plasma membrane-derived chromatophore membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0045263; C:proton-transporting ATP synthase complex, coupling factor F(o); IEA:UniProtKB-KW.
DR   GO; GO:0006811; P:ion transport; IEA:UniProtKB-KW.
DR   InterPro; IPR016989; Atp1_alphaprobac.
DR   InterPro; IPR032820; ATPase_put.
DR   Pfam; PF09527; ATPase_gene1; 1.
DR   PIRSF; PIRSF032126; F0F1_ATP_synthase_subunit_I; 1.
PE   1: Evidence at protein level;
KW   CF(0); Hydrogen ion transport; Ion transport; Membrane; Transmembrane;
KW   Transmembrane helix; Transport.
FT   CHAIN           1..114
FT                   /note="ATP synthase protein I"
FT                   /id="PRO_0000239040"
FT   TRANSMEM        48..68
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        69..89
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   114 AA;  12095 MW;  3EC86B9538A4374B CRC64;
     MSEEVGGEPD PERLAALEKR LSQLKKTEEA PKRAADGDLR MADMAWRMVI ELVSGLGIGF
     GIGYGLDAVF GTQPFLMLIF VFLGLAAGVK VMLRSAADLT KAQARAAAAG KEGK