ID   ATPZ_ALKPO              Reviewed;         133 AA.
AC   P22475; D3G0G0;
DT   01-AUG-1991, integrated into UniProtKB/Swiss-Prot.
DT   11-JUL-2001, sequence version 2.
DT   03-AUG-2022, entry version 112.
DE   RecName: Full=ATP synthase protein I;
GN   Name=atpI; OrderedLocusNames=BpOF4_06885;
OS   Alkalihalophilus pseudofirmus (strain ATCC BAA-2126 / JCM 17055 / OF4)
OS   (Bacillus pseudofirmus).
OC   Bacteria; Firmicutes; Bacilli; Bacillales; Bacillaceae; Alkalihalophilus.
OX   NCBI_TaxID=398511;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=1833620; DOI=10.1007/bf00272169;
RA   Ivey D.M., Krulwich T.A.;
RT   "Organization and nucleotide sequence of the atp genes encoding the ATP
RT   synthase from alkaliphilic Bacillus firmus OF4.";
RL   Mol. Gen. Genet. 229:292-300(1991).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC BAA-2126 / JCM 17055 / OF4;
RX   PubMed=21951522; DOI=10.1111/j.1462-2920.2011.02591.x;
RA   Janto B., Ahmed A., Ito M., Liu J., Hicks D.B., Pagni S., Fackelmayer O.J.,
RA   Smith T.A., Earl J., Elbourne L.D., Hassan K., Paulsen I.T., Kolsto A.B.,
RA   Tourasse N.J., Ehrlich G.D., Boissy R., Ivey D.M., Li G., Xue Y., Ma Y.,
RA   Hu F.Z., Krulwich T.A.;
RT   "Genome of alkaliphilic Bacillus pseudofirmus OF4 reveals adaptations that
RT   support the ability to grow in an external pH range from 7.5 to 11.4.";
RL   Environ. Microbiol. 13:3289-3309(2011).
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}.
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DR   EMBL; AF330160; AAG48357.1; -; Genomic_DNA.
DR   EMBL; CP001878; ADC49435.1; -; Genomic_DNA.
DR   AlphaFoldDB; P22475; -.
DR   STRING; 398511.BpOF4_06885; -.
DR   TCDB; 1.A.77.3.1; the mg(2+)/ca(2+) uniporter (mcu) family.
DR   EnsemblBacteria; ADC49435; ADC49435; BpOF4_06885.
DR   KEGG; bpf:BpOF4_06885; -.
DR   HOGENOM; CLU_147331_0_0_9; -.
DR   OMA; AYSMYRR; -.
DR   Proteomes; UP000001544; 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.
DR   InterPro; IPR005598; ATP_synth_I.
DR   Pfam; PF03899; ATP-synt_I; 1.
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..133
FT                   /note="ATP synthase protein I"
FT                   /id="PRO_0000071702"
FT   TRANSMEM        16..36
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        38..58
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        74..94
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        107..127
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   133 AA;  15214 MW;  555B4380F75C6D37 CRC64;
     MSKMSSLQGK MRQHTIIVMT LLFLFITGYL LTQLKVQFLS FFAGLSVSFL NLWTTYYLAK
     VVGKVADQKR KHSVLPFILA GFGYLIRIVL ALSVVYWALI NPDTLNVLLV IAGISLIYAI
     IMLDMLFQFM RKR