ID   KDPA_ECOSM              Reviewed;         557 AA.
AC   B1LLE2;
DT   14-APR-2009, integrated into UniProtKB/Swiss-Prot.
DT   29-APR-2008, sequence version 1.
DT   25-MAY-2022, entry version 74.
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};
GN   OrderedLocusNames=EcSMS35_0720;
OS   Escherichia coli (strain SMS-3-5 / SECEC).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; Escherichia.
OX   NCBI_TaxID=439855;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=SMS-3-5 / SECEC;
RX   PubMed=18708504; DOI=10.1128/jb.00661-08;
RA   Fricke W.F., Wright M.S., Lindell A.H., Harkins D.M., Baker-Austin C.,
RA   Ravel J., Stepanauskas R.;
RT   "Insights into the environmental resistance gene pool from the genome
RT   sequence of the multidrug-resistant environmental isolate Escherichia coli
RT   SMS-3-5.";
RL   J. Bacteriol. 190:6779-6794(2008).
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; CP000970; ACB17694.1; -; Genomic_DNA.
DR   RefSeq; WP_000741158.1; NC_010498.1.
DR   AlphaFoldDB; B1LLE2; -.
DR   SMR; B1LLE2; -.
DR   EnsemblBacteria; ACB17694; ACB17694; EcSMS35_0720.
DR   KEGG; ecm:EcSMS35_0720; -.
DR   HOGENOM; CLU_018614_3_0_6; -.
DR   OMA; RQGWAIL; -.
DR   Proteomes; UP000007011; 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; Transmembrane; Transmembrane helix; Transport.
FT   CHAIN           1..557
FT                   /note="Potassium-transporting ATPase potassium-binding
FT                   subunit"
FT                   /id="PRO_1000119339"
FT   TRANSMEM        5..25
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00275"
FT   TRANSMEM        63..83
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00275"
FT   TRANSMEM        132..152
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00275"
FT   TRANSMEM        170..190
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00275"
FT   TRANSMEM        253..273
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00275"
FT   TRANSMEM        283..303
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00275"
FT   TRANSMEM        329..349
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00275"
FT   TRANSMEM        356..376
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00275"
FT   TRANSMEM        379..399
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00275"
FT   TRANSMEM        416..436
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00275"
FT   TRANSMEM        484..504
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00275"
FT   TRANSMEM        526..546
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00275"
SQ   SEQUENCE   557 AA;  59104 MW;  24416A30F315E011 CRC64;
     MAAQGFLLIA TFLLVLMVLA RPLGSGLARL INDIPLPGTT GVERVLFSAL GVSDREMNWK
     QYLSAILGLN MLGLAVLFFM LLGQHYLPLN PQQLPGLSWD LALNTAVSFV TNTNWQSYSG
     ETTLSYFSQM AGLTVQNFLS AASGIAVIFA FIRAFTRQSM STLGNAWVDL LRITLWVLVP
     VALLIALFFI QQGALQNFLP YQAVNTVEGA KQLLPMGPVA SQEAIKMLGT NGGGFFNANS
     SHPFENPTTL TNFVQMLAIF LIPTALCFAF GEVAGDRRQG RMLLWAMSVI FVICVGVVMW
     AEVQGNPHLL ALGADSSINM EGKESRFGVL VSSLFAVVTT AASCGAVIAM HDSFTALGGM
     VPMWLMQIGE VVFGGVGSGL YGMMLFVLLA VFIAGLMIGR TPEYLGKKID VREMKLTALA
     ILVTPTLVLM GAALAMMTDA GRSAMLNPGP HGFSEVLYAV SSAANNNGSA FAGLSANSPF
     WNCLLAFCMF VGRFGVIIPV MAIAGSLVSK KSQPASSGTL PTHGPLFVGL LIGTVLLVGA
     LTFIPALALG PVAEYLS