ID   KDPA_ANASL              Reviewed;         561 AA.
AC   Q9R6X2;
DT   01-DEC-2000, integrated into UniProtKB/Swiss-Prot.
DT   01-MAY-2000, sequence version 1.
DT   25-MAY-2022, entry version 84.
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};
OS   Anabaena sp. (strain L31).
OC   Bacteria; Cyanobacteria; Nostocales; Nostocaceae; Anabaena;
OC   unclassified Anabaena.
OX   NCBI_TaxID=29412;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RA   Ballal A.D., Gassel M., Schleussinger E., Rajaram H., Apte S.K.,
RA   Altendorf K.;
RT   "The kdp operon of the heterocystous nitrogen-fixing cyanobacterium
RT   Anabaena sp. strain L-31.";
RL   Submitted (DEC-1999) 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 extracellular 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 membrane {ECO:0000255|HAMAP-Rule:MF_00275};
CC       Multi-pass membrane protein {ECO:0000255|HAMAP-Rule:MF_00275}.
CC   -!- SIMILARITY: Belongs to the KdpA family. {ECO:0000255|HAMAP-
CC       Rule:MF_00275}.
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DR   EMBL; AF213466; AAF19986.1; -; Genomic_DNA.
DR   PIR; T46845; T46845.
DR   AlphaFoldDB; Q9R6X2; -.
DR   SMR; Q9R6X2; -.
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 membrane; Ion transport; Membrane; Potassium; Potassium transport;
KW   Transmembrane; Transmembrane helix; Transport.
FT   CHAIN           1..561
FT                   /note="Potassium-transporting ATPase potassium-binding
FT                   subunit"
FT                   /id="PRO_0000166475"
FT   TRANSMEM        2..22
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        135..155
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00275"
FT   TRANSMEM        177..197
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        280..300
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00275"
FT   TRANSMEM        327..347
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00275"
FT   TRANSMEM        353..373
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00275"
FT   TRANSMEM        378..398
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00275"
FT   TRANSMEM        413..433
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00275"
FT   TRANSMEM        482..502
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   561 AA;  60777 MW;  C8EE833FF0E07D81 CRC64;
     MGLGLLQIGL TLCIVIAITP VLGRYIARVF LEERTILDPL MNPIERSIYV ISGVRPKDDM
     TGWQYIRAIL YTNLFMGILV YSLIHYQRLL PWNPNGFGVP RWDIILHTVV SFVTNTDQQH
     YAGETTLSYF SQVAALGFLM FTSAATGLAV GIAFIRGLTG KKLGNFYIDL TRGITRILLP
     ISVIGAIALV LLGVPQTLGG SLTITTLEGG TQYIARGPVA SFEMIKMLGE NGGGFFAANS
     AHPFENPNGA TNFIETIAMI AIPAAMIYTY GVFAKNIKQA WLLFWMVFIV FVILVWVAAT
     GELQGNPLVN GTLGIEKPNL EGKELRFGWA ETALWAVMTT ATMCGAVNGM HDALMPQGLF
     ATLFNLFLQI IWGGQGTGTA YLFIYLILTV FLTGLMVGRT PEIFGRKIEK REIVLASLIL
     LVHPIVVLIP SAIALAYPYS LSGITNPGFH GISQVVYEYA SASSNNGSGL EGLTDNSLWW
     NLSTSLSILV GRYVPIIAML LLADSMSRKQ TVPQTPGTLK TDSLLFTTVT AGIVLILGVL
     TFFPVLALGP IAEAFKLASG S