ID   KDPA_RHOCS              Reviewed;         573 AA.
AC   B6IQY9;
DT   24-MAR-2009, integrated into UniProtKB/Swiss-Prot.
DT   16-DEC-2008, sequence version 1.
DT   25-MAY-2022, entry version 71.
DE   RecName: Full=Potassium-transporting ATPase potassium-binding subunit {ECO:0000255|HAMAP-Rule:MF_00275};
DE   AltName: Full=ATP phosphohydrolase [potassium-transporting] A chain {ECO:0000255|HAMAP-Rule:MF_00275};
DE   AltName: Full=Potassium-binding and translocating subunit A {ECO:0000255|HAMAP-Rule:MF_00275};
DE   AltName: Full=Potassium-translocating ATPase A chain {ECO:0000255|HAMAP-Rule:MF_00275};
GN   Name=kdpA {ECO:0000255|HAMAP-Rule:MF_00275}; OrderedLocusNames=RC1_0436;
OS   Rhodospirillum centenum (strain ATCC 51521 / SW).
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Rhodospirillales;
OC   Rhodospirillaceae; Rhodospirillum.
OX   NCBI_TaxID=414684;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 51521 / SW;
RA   Touchman J.W., Bauer C., Blankenship R.E.;
RT   "Genome sequence of Rhodospirillum centenum.";
RL   Submitted (MAR-2007) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Part of the high-affinity ATP-driven potassium transport (or
CC       Kdp) system, which catalyzes the hydrolysis of ATP coupled with the
CC       electrogenic transport of potassium into the cytoplasm. This subunit
CC       binds the periplasmic potassium ions and delivers the ions to the
CC       membrane domain of KdpB through an intramembrane tunnel.
CC       {ECO:0000255|HAMAP-Rule:MF_00275}.
CC   -!- SUBUNIT: The system is composed of three essential subunits: KdpA, KdpB
CC       and KdpC. {ECO:0000255|HAMAP-Rule:MF_00275}.
CC   -!- SUBCELLULAR LOCATION: Cell inner membrane {ECO:0000255|HAMAP-
CC       Rule:MF_00275}; Multi-pass membrane protein {ECO:0000255|HAMAP-
CC       Rule:MF_00275}.
CC   -!- SIMILARITY: Belongs to the KdpA family. {ECO:0000255|HAMAP-
CC       Rule:MF_00275}.
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DR   EMBL; CP000613; ACI97875.1; -; Genomic_DNA.
DR   RefSeq; WP_012565667.1; NC_011420.2.
DR   AlphaFoldDB; B6IQY9; -.
DR   SMR; B6IQY9; -.
DR   STRING; 414684.RC1_0436; -.
DR   EnsemblBacteria; ACI97875; ACI97875; RC1_0436.
DR   KEGG; rce:RC1_0436; -.
DR   eggNOG; COG2060; Bacteria.
DR   HOGENOM; CLU_018614_3_0_5; -.
DR   OMA; RQGWAIL; -.
DR   OrthoDB; 296671at2; -.
DR   Proteomes; UP000001591; Chromosome.
DR   GO; GO:0005887; C:integral component of plasma membrane; IEA:UniProtKB-UniRule.
DR   GO; GO:0008556; F:P-type potassium transmembrane transporter activity; IEA:InterPro.
DR   GO; GO:0030955; F:potassium ion binding; IEA:UniProtKB-UniRule.
DR   HAMAP; MF_00275; KdpA; 1.
DR   InterPro; IPR004623; KdpA.
DR   PANTHER; PTHR30607; PTHR30607; 1.
DR   Pfam; PF03814; KdpA; 1.
DR   PIRSF; PIRSF001294; K_ATPaseA; 1.
DR   TIGRFAMs; TIGR00680; kdpA; 1.
PE   3: Inferred from homology;
KW   Cell inner membrane; Cell membrane; Ion transport; Membrane; Potassium;
KW   Potassium transport; Reference proteome; Transmembrane;
KW   Transmembrane helix; Transport.
FT   CHAIN           1..573
FT                   /note="Potassium-transporting ATPase potassium-binding
FT                   subunit"
FT                   /id="PRO_1000114696"
FT   TRANSMEM        3..23
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00275"
FT   TRANSMEM        65..85
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00275"
FT   TRANSMEM        136..156
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00275"
FT   TRANSMEM        179..199
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00275"
FT   TRANSMEM        254..274
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00275"
FT   TRANSMEM        286..306
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00275"
FT   TRANSMEM        383..403
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00275"
FT   TRANSMEM        423..443
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00275"
FT   TRANSMEM        489..509
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00275"
FT   TRANSMEM        531..551
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00275"
SQ   SEQUENCE   573 AA;  59937 MW;  3CFD52C7F7F96526 CRC64;
     MTAEGLLQIL LYLGLLAAVT PLLGRYMARV FEGERTLPGI VLGPLERGLY RIAGIDPARE
     QHWTGYTLAL LSFNLLGLLL LYALLRFQAL LPLNPAELGP VGPDLAFNTA VSFTTNTNWQ
     SYGGETTLSY LSQMLGLTVQ NFVSAATGIA VAVALIRGFA RRAGKTVGNF WADLVRATLY
     VLLPLAFLGA LVLVWQGVPQ NFDAYVTATT LEGGNQVLAQ GPAASQIAIK QLGSNGGGFF
     NVNSAHPYEN PTALTNLLES FYLLMIAAAL IYSFGRMVGD TRQGRALWTA VFILFVAGLA
     VTWWAEAQGN PAVTALGVET TDGNMEGKEV RYGTALSALW AVATTAASNG SVNAMHDSFM
     PLGGMVPMLN MMLGEVIYGG VGAGLYGLLV FVILAVFIAG LMVGRTPEYL GKKIEAREIK
     LAVIAVLVFP LGILGGAALT TVVPQMLASV QDPGPHGLSE ILYAYTSATG NNGSAFAGFG
     ANTPWHNTGL GLAMLLGRFA VIVPTLAIAG SLVAKRAAPA GPGTLPTHGT LFITLLIATI
     LIVGGLTFFP ALALGPIAEH LSLTAGTLFG AVP