ID   ATPZ_SYNY3              Reviewed;         117 AA.
AC   P27196;
DT   01-AUG-1992, integrated into UniProtKB/Swiss-Prot.
DT   01-AUG-1992, sequence version 1.
DT   25-MAY-2022, entry version 105.
DE   RecName: Full=ATP synthase protein I;
GN   Name=atpI; OrderedLocusNames=sll1321;
OS   Synechocystis sp. (strain PCC 6803 / Kazusa).
OC   Bacteria; Cyanobacteria; Synechococcales; Merismopediaceae; Synechocystis;
OC   unclassified Synechocystis.
OX   NCBI_TaxID=1111708;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=1832989; DOI=10.1007/bf00037050;
RA   Lill H., Nelson N.;
RT   "The atp1 and atp2 operons of the cyanobacterium Synechocystis sp. PCC
RT   6803.";
RL   Plant Mol. Biol. 17:641-652(1991).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=PCC 6803 / Kazusa;
RX   PubMed=8905231; DOI=10.1093/dnares/3.3.109;
RA   Kaneko T., Sato S., Kotani H., Tanaka A., Asamizu E., Nakamura Y.,
RA   Miyajima N., Hirosawa M., Sugiura M., Sasamoto S., Kimura T., Hosouchi T.,
RA   Matsuno A., Muraki A., Nakazaki N., Naruo K., Okumura S., Shimpo S.,
RA   Takeuchi C., Wada T., Watanabe A., Yamada M., Yasuda M., Tabata S.;
RT   "Sequence analysis of the genome of the unicellular cyanobacterium
RT   Synechocystis sp. strain PCC6803. II. Sequence determination of the entire
RT   genome and assignment of potential protein-coding regions.";
RL   DNA Res. 3:109-136(1996).
CC   -!- FUNCTION: A possible function for this protein is to guide the assembly
CC       of the membrane sector of the ATPase enzyme complex.
CC   -!- SUBCELLULAR LOCATION: Cell membrane {ECO:0000305}; Multi-pass membrane
CC       protein {ECO:0000305}.
CC   -!- SIMILARITY: Belongs to the bacterial AtpI family. {ECO:0000305}.
CC   -!- SEQUENCE CAUTION:
CC       Sequence=BAA16741.1; Type=Erroneous initiation; Evidence={ECO:0000305};
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DR   EMBL; X58128; CAA41129.1; -; Genomic_DNA.
DR   EMBL; BA000022; BAA16741.1; ALT_INIT; Genomic_DNA.
DR   PIR; S74589; S74589.
DR   AlphaFoldDB; P27196; -.
DR   STRING; 1148.1651814; -.
DR   PaxDb; P27196; -.
DR   EnsemblBacteria; BAA16741; BAA16741; BAA16741.
DR   KEGG; syn:sll1321; -.
DR   eggNOG; ENOG5032SW6; Bacteria.
DR   InParanoid; P27196; -.
DR   OMA; NYLLGAC; -.
DR   Proteomes; UP000001425; Chromosome.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   GO; GO:0005886; C:plasma 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.
PE   3: Inferred from homology;
KW   Cell membrane; CF(0); Hydrogen ion transport; Ion transport; Membrane;
KW   Reference proteome; Transmembrane; Transmembrane helix; Transport.
FT   CHAIN           1..117
FT                   /note="ATP synthase protein I"
FT                   /id="PRO_0000071718"
FT   TRANSMEM        16..36
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        61..81
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        88..108
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   117 AA;  12972 MW;  F3BB8CBA57FED757 CRC64;
     MADFYRLQRQ LLTWTLVATA IIFVCVVWVY SLNIALNYLL GALVGLVYLK LLAKDVERIG
     AQSGRAGVKG LAVFVGLIII ATQRENLEVL PIFLGFLTYK AAIIFYMLQS VFTPAAD