KDPB_BACC7
ID KDPB_BACC7 Reviewed; 697 AA.
AC B7HWG1;
DT 14-APR-2009, integrated into UniProtKB/Swiss-Prot.
DT 10-FEB-2009, sequence version 1.
DT 03-AUG-2022, entry version 80.
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};
GN OrderedLocusNames=BCAH187_A0895;
OS Bacillus cereus (strain AH187).
OC Bacteria; Firmicutes; Bacilli; Bacillales; Bacillaceae; Bacillus;
OC Bacillus cereus group.
OX NCBI_TaxID=405534;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=AH187;
RA Dodson R.J., Durkin A.S., Rosovitz M.J., Rasko D.A., Kolsto A.B.,
RA Okstad O.A., Ravel J., Sutton G.;
RT "Genome sequence of Bacillus cereus AH187.";
RL Submitted (OCT-2008) 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 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 membrane {ECO:0000255|HAMAP-Rule:MF_00285};
CC Multi-pass membrane protein {ECO:0000255|HAMAP-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; CP001177; ACJ78940.1; -; Genomic_DNA.
DR AlphaFoldDB; B7HWG1; -.
DR SMR; B7HWG1; -.
DR EnsemblBacteria; ACJ78940; ACJ78940; BCAH187_A0895.
DR KEGG; bcr:BCAH187_A0895; -.
DR HOGENOM; CLU_025728_2_0_9; -.
DR OMA; ILWLWFT; -.
DR Proteomes; UP000002214; 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; 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 membrane; Ion transport; Magnesium; Membrane;
KW Metal-binding; Nucleotide-binding; Phosphoprotein; Potassium;
KW Potassium transport; Translocase; Transmembrane; Transmembrane helix;
KW Transport.
FT CHAIN 1..697
FT /note="Potassium-transporting ATPase ATP-binding subunit"
FT /id="PRO_1000119407"
FT TRANSMEM 55..75
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00285"
FT TRANSMEM 82..102
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00285"
FT TRANSMEM 245..265
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00285"
FT TRANSMEM 271..291
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00285"
FT TRANSMEM 605..625
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00285"
FT TRANSMEM 633..653
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00285"
FT TRANSMEM 677..697
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00285"
FT ACT_SITE 324
FT /note="4-aspartylphosphate intermediate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00285"
FT BINDING 361
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00285"
FT BINDING 365
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00285"
FT BINDING 393..400
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00285"
FT BINDING 412
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00285"
FT BINDING 535
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00285"
FT BINDING 539
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00285"
SQ SEQUENCE 697 AA; 74683 MW; A5EA27019A43ED71 CRC64;
MMRPVVVKEK RVNESQIHVV EEEVRQAKTM DRDIVTHAMK QSFAKLNPKV MIKNPIMFVV
EIGFIITFIL SFLPSHSSSV PGWFNITVSF ILLFTVLFAN FAEALAEGRG KAQADSLKHS
KKDVFANVVK ENGNIVQVSA TDLRKGDVVI VKQGEMIPSD GEVIKGLASV DESAITGESA
PVIKEAGGDF CSVTGGTMVV SDEITIIITS NPGESFIDKM ISLVEGAARQ KTPNEIALNT
VLTSLTFIFL IVVVTLPIFT NYLGFQIDTA VLVALLVCLI PTTIGGLLSA IGIAGMDRVT
KFNVLAMSGK AVEAAGDINT IILDKTGTIT FGNRMAHTLL PVGNETIEQV GKWAAISSVL
DETPEGRSVI EYVQAKSISY NRELAEQGEF VPFKAETRMS GVDLQDGTKV RKGAVGSVIE
WVQSQGGTIP KDVNQKADFI SKEGGTPLVV AVNNRIYGLI YLKDTVKPGM RERFEQLRQM
GIKTVMCTGD NPLTAATIAK EAGVDEFVAE CKPEDKIAVI KAEQDKGKLV AMTGDGTNDA
PALAQADVGL AMNSGTTAAK EAANMIDLDS NPTKIIEVVG IGKQLLMTRG ALTTFSIAND
IAKYFAIIPA MFTLAIPQME ALNIMKLTSP LSAILSALLF NAVIIPLLIP LAMKGIAYKP
MSSNALLGRN LLIYGLGGVI VPFIGIKVID MIVGLFI
