ID   KDPB_SALCH              Reviewed;         682 AA.
AC   Q57RN0;
DT   15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT   10-MAY-2005, sequence version 1.
DT   03-AUG-2022, entry version 110.
DE   RecName: Full=Potassium-transporting ATPase ATP-binding subunit {ECO:0000255|HAMAP-Rule:MF_00285};
DE            EC=7.2.2.6 {ECO:0000255|HAMAP-Rule:MF_00285};
DE   AltName: Full=ATP phosphohydrolase [potassium-transporting] B chain {ECO:0000255|HAMAP-Rule:MF_00285};
DE   AltName: Full=Potassium-binding and translocating subunit B {ECO:0000255|HAMAP-Rule:MF_00285};
DE   AltName: Full=Potassium-translocating ATPase B chain {ECO:0000255|HAMAP-Rule:MF_00285};
GN   Name=kdpB {ECO:0000255|HAMAP-Rule:MF_00285}; OrderedLocusNames=SCH_0725;
OS   Salmonella choleraesuis (strain SC-B67).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; Salmonella.
OX   NCBI_TaxID=321314;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=SC-B67;
RX   PubMed=15781495; DOI=10.1093/nar/gki297;
RA   Chiu C.-H., Tang P., Chu C., Hu S., Bao Q., Yu J., Chou Y.-Y., Wang H.-S.,
RA   Lee Y.-S.;
RT   "The genome sequence of Salmonella enterica serovar Choleraesuis, a highly
RT   invasive and resistant zoonotic pathogen.";
RL   Nucleic Acids Res. 33:1690-1698(2005).
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 is
CC       responsible for energy coupling to the transport system and for the
CC       release of the potassium ions to the cytoplasm. {ECO:0000255|HAMAP-
CC       Rule:MF_00285}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=ATP + H2O + K(+)(out) = ADP + H(+) + K(+)(in) + phosphate;
CC         Xref=Rhea:RHEA:16777, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378,
CC         ChEBI:CHEBI:29103, ChEBI:CHEBI:30616, ChEBI:CHEBI:43474,
CC         ChEBI:CHEBI:456216; EC=7.2.2.6; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_00285};
CC       PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:16778;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00285};
CC   -!- SUBUNIT: The system is composed of three essential subunits: KdpA, KdpB
CC       and KdpC. {ECO:0000255|HAMAP-Rule:MF_00285}.
CC   -!- SUBCELLULAR LOCATION: Cell inner membrane {ECO:0000255|HAMAP-
CC       Rule:MF_00285}; Multi-pass membrane protein {ECO:0000255|HAMAP-
CC       Rule:MF_00285}.
CC   -!- SIMILARITY: Belongs to the cation transport ATPase (P-type) (TC 3.A.3)
CC       family. Type IA subfamily. {ECO:0000255|HAMAP-Rule:MF_00285}.
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DR   EMBL; AE017220; AAX64631.1; -; Genomic_DNA.
DR   RefSeq; WP_011264224.1; NC_006905.1.
DR   AlphaFoldDB; Q57RN0; -.
DR   SMR; Q57RN0; -.
DR   EnsemblBacteria; AAX64631; AAX64631; SCH_0725.
DR   KEGG; sec:SCH_0725; -.
DR   HOGENOM; CLU_025728_2_0_6; -.
DR   OMA; ILWLWFT; -.
DR   Proteomes; UP000000538; Chromosome.
DR   GO; GO:0005887; C:integral component of plasma membrane; IEA:UniProtKB-UniRule.
DR   GO; GO:0005524; F:ATP binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0016887; F:ATP hydrolysis activity; IEA:InterPro.
DR   GO; GO:0000287; F:magnesium ion binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0008556; F:P-type potassium transmembrane transporter activity; IEA:UniProtKB-UniRule.
DR   CDD; cd02078; P-type_ATPase_K; 1.
DR   Gene3D; 3.40.1110.10; -; 1.
DR   Gene3D; 3.40.50.1000; -; 1.
DR   HAMAP; MF_00285; KdpB; 1.
DR   InterPro; IPR023299; ATPase_P-typ_cyto_dom_N.
DR   InterPro; IPR018303; ATPase_P-typ_P_site.
DR   InterPro; IPR023298; ATPase_P-typ_TM_dom_sf.
DR   InterPro; IPR008250; ATPase_P-typ_transduc_dom_A_sf.
DR   InterPro; IPR036412; HAD-like_sf.
DR   InterPro; IPR023214; HAD_sf.
DR   InterPro; IPR006391; P-type_ATPase_bsu_IA.
DR   InterPro; IPR001757; P_typ_ATPase.
DR   InterPro; IPR044492; P_typ_ATPase_HD_dom.
DR   PANTHER; PTHR43743; PTHR43743; 1.
DR   SFLD; SFLDF00027; p-type_atpase; 1.
DR   SUPFAM; SSF56784; SSF56784; 1.
DR   SUPFAM; SSF81653; SSF81653; 1.
DR   SUPFAM; SSF81660; SSF81660; 1.
DR   SUPFAM; SSF81665; SSF81665; 1.
DR   TIGRFAMs; TIGR01494; ATPase_P-type; 2.
DR   TIGRFAMs; TIGR01497; kdpB; 1.
DR   PROSITE; PS00154; ATPASE_E1_E2; 1.
PE   3: Inferred from homology;
KW   ATP-binding; Cell inner membrane; Cell membrane; Ion transport; Magnesium;
KW   Membrane; Metal-binding; Nucleotide-binding; Phosphoprotein; Potassium;
KW   Potassium transport; Translocase; Transmembrane; Transmembrane helix;
KW   Transport.
FT   CHAIN           1..682
FT                   /note="Potassium-transporting ATPase ATP-binding subunit"
FT                   /id="PRO_1000022444"
FT   TRANSMEM        34..54
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00285"
FT   TRANSMEM        58..78
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00285"
FT   TRANSMEM        219..239
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00285"
FT   TRANSMEM        254..274
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00285"
FT   TRANSMEM        588..608
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00285"
FT   TRANSMEM        616..636
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00285"
FT   TRANSMEM        662..682
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00285"
FT   ACT_SITE        307
FT                   /note="4-aspartylphosphate intermediate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00285"
FT   BINDING         344
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00285"
FT   BINDING         348
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00285"
FT   BINDING         377..384
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00285"
FT   BINDING         395
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00285"
FT   BINDING         518
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00285"
FT   BINDING         522
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00285"
SQ   SEQUENCE   682 AA;  72268 MW;  B7A8013ADB3FF05E CRC64;
     MSRKQLALFE PVLLVQALTD AVKKLSPRAQ WRNPVMFVVW ASSVLTTLLT LAMVTGQIAG
     SALFTGVISL WLWFTVLFAN FAEALAEGRS KAQANSLKGV KKTAFARRLR APRHDAQADN
     VPAAELRKGD IVLVKAGDII PCDGEVIEGG ASVDESAITG ESAPVIRESG GDFASVTGGT
     RILSDWLVIA CSVNPGETFL DRMIAMVEGA QRRKTPNEIA LTILLIALTI VFLLATATLW
     PFSAWGGNAV SVTVLVALLV CLIPTTIGGL LSAIGVAGMS RMLGANVIAT SGRAVEAAGD
     VDVLLLDKTG TITLGNRQAS DFIPARGVDE RTLADAAQLA SLADETPEGR SIVILAKQRF
     NLRERDVQSL HATFVPFTAQ SRMSGINIDN RMIRKGSVDA IRRHVESNGG HFPADVEQNV
     ENVARLGATP LVVVEGARVL GVIALKDIVK GGIKERFAQL RKMGIKTVMI TGDNRLTAEA
     FAAEAGVDDF LAEATPEAKL ALIRQYQAEG RLVAMTGDGT NDAPALAQAD VAVAMNSGTQ
     AAKEAGNMVD LDSNPTKLIE VVHIGKQMLM TRGSLTTFSI ANDVAKYFAI IPAAFAATYP
     QLNALNVMGL HSPNSAILSA VIFNALIIIF LIPLALKGVS YKPLSASAML RRNLWIYGLG
     GLVVPFIGIK VIDVLLTLLG LA