ID   KDPA_POLNA              Reviewed;         599 AA.
AC   A1VTC2;
DT   15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT   06-FEB-2007, sequence version 1.
DT   25-MAY-2022, entry version 87.
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=Pnap_3604;
OS   Polaromonas naphthalenivorans (strain CJ2).
OC   Bacteria; Proteobacteria; Betaproteobacteria; Burkholderiales;
OC   Comamonadaceae; Polaromonas.
OX   NCBI_TaxID=365044;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=CJ2;
RX   PubMed=19453698; DOI=10.1111/j.1462-2920.2009.01947.x;
RA   Yagi J.M., Sims D., Brettin T., Bruce D., Madsen E.L.;
RT   "The genome of Polaromonas naphthalenivorans strain CJ2, isolated from coal
RT   tar-contaminated sediment, reveals physiological and metabolic versatility
RT   and evolution through extensive horizontal gene transfer.";
RL   Environ. Microbiol. 11:2253-2270(2009).
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; CP000529; ABM38900.1; -; Genomic_DNA.
DR   RefSeq; WP_011802970.1; NC_008781.1.
DR   AlphaFoldDB; A1VTC2; -.
DR   SMR; A1VTC2; -.
DR   STRING; 365044.Pnap_3604; -.
DR   EnsemblBacteria; ABM38900; ABM38900; Pnap_3604.
DR   KEGG; pna:Pnap_3604; -.
DR   eggNOG; COG2060; Bacteria.
DR   HOGENOM; CLU_018614_3_0_4; -.
DR   OMA; RQGWAIL; -.
DR   OrthoDB; 296671at2; -.
DR   Proteomes; UP000000644; 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..599
FT                   /note="Potassium-transporting ATPase potassium-binding
FT                   subunit"
FT                   /id="PRO_1000022239"
FT   TRANSMEM        8..28
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00275"
FT   TRANSMEM        61..81
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00275"
FT   TRANSMEM        133..153
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00275"
FT   TRANSMEM        176..196
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00275"
FT   TRANSMEM        280..300
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00275"
FT   TRANSMEM        311..331
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00275"
FT   TRANSMEM        366..386
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00275"
FT   TRANSMEM        391..411
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        456..476
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00275"
FT   TRANSMEM        521..541
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00275"
FT   TRANSMEM        563..583
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00275"
SQ   SEQUENCE   599 AA;  62663 MW;  C5F497F48C3E2EC8 CRC64;
     MTASSWELLA LYLGALLLAA WPLGIWLARI SSGRLPGWMQ RVEAPLLRLA GTSADQAMNW
     WQYALALLAF NALGLLAVYA LQRLQAVLPL NPAGMAAISP DSAFNTAISF VSNTNWQGYG
     GEASMSYLTQ MLALAVQNFL SAATGIAVVF ALFRGFAARA TGAIGNFWVD VTRITAWLLL
     PLSLVFALFL AGNGVIQNFD AYKDVATLEA TSYQQPKTGL DGQPLKDAQG AAVMENVRTD
     KQTLAMGPVA SQEAIKMLGT NGGGFFNANS AHPYENPNAL TNFFQMLAIF LIPAALCFAF
     GREVGDLRQG WAVLAAMTVM FVIAVVAITP AEQAGNPLLT PLGVDQAASA LQAGGNMEGK
     ETRFGINASS LFAVITTAAS CGAVIAMHDS FTPLGGMVPM VMMQLGEVVF GGTGTGLYGM
     LIFAILAVFI SGLMIGRTPE YLGKKIESHE MKLTSIAILV TPILVLAGTA VAVLAGAGRA
     GVANPGAHGF SEILYALSSA GNNNGSAFAG LSANTPFYNT LLGLAMWLGR FGVIVPVLAI
     AGSLAAKKRL PVTPGTMPTH GPLFVLLLIG TVLLVGLLNY VPALALGPVV EHLMLWPAH