ID   KUP_ECODH               Reviewed;         622 AA.
AC   B1X9X4;
DT   14-APR-2009, integrated into UniProtKB/Swiss-Prot.
DT   20-MAY-2008, sequence version 1.
DT   03-AUG-2022, entry version 72.
DE   RecName: Full=Low affinity potassium transport system protein kup {ECO:0000255|HAMAP-Rule:MF_01522};
DE   AltName: Full=Kup system potassium uptake protein {ECO:0000255|HAMAP-Rule:MF_01522};
GN   Name=kup {ECO:0000255|HAMAP-Rule:MF_01522}; OrderedLocusNames=ECDH10B_3935;
OS   Escherichia coli (strain K12 / DH10B).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; Escherichia.
OX   NCBI_TaxID=316385;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=K12 / DH10B;
RX   PubMed=18245285; DOI=10.1128/jb.01695-07;
RA   Durfee T., Nelson R., Baldwin S., Plunkett G. III, Burland V., Mau B.,
RA   Petrosino J.F., Qin X., Muzny D.M., Ayele M., Gibbs R.A., Csorgo B.,
RA   Posfai G., Weinstock G.M., Blattner F.R.;
RT   "The complete genome sequence of Escherichia coli DH10B: insights into the
RT   biology of a laboratory workhorse.";
RL   J. Bacteriol. 190:2597-2606(2008).
CC   -!- FUNCTION: Responsible for the low-affinity transport of potassium into
CC       the cell, with the probable concomitant uptake of protons (symport
CC       system). {ECO:0000255|HAMAP-Rule:MF_01522}.
CC   -!- SUBCELLULAR LOCATION: Cell inner membrane {ECO:0000255|HAMAP-
CC       Rule:MF_01522}; Multi-pass membrane protein {ECO:0000255|HAMAP-
CC       Rule:MF_01522}.
CC   -!- SIMILARITY: Belongs to the HAK/KUP transporter (TC 2.A.72) family.
CC       {ECO:0000255|HAMAP-Rule:MF_01522}.
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DR   EMBL; CP000948; ACB04789.1; -; Genomic_DNA.
DR   RefSeq; WP_000102319.1; NC_010473.1.
DR   AlphaFoldDB; B1X9X4; -.
DR   KEGG; ecd:ECDH10B_3935; -.
DR   HOGENOM; CLU_008142_4_2_6; -.
DR   OMA; AADQFEI; -.
DR   BioCyc; ECOL316385:ECDH10B_RS20030-MON; -.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   GO; GO:0005886; C:plasma membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0015079; F:potassium ion transmembrane transporter activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0015293; F:symporter activity; IEA:UniProtKB-UniRule.
DR   HAMAP; MF_01522; Kup; 1.
DR   InterPro; IPR003855; K+_transporter.
DR   InterPro; IPR023051; K+_uptake_low_affin.
DR   PANTHER; PTHR30540; PTHR30540; 1.
DR   Pfam; PF02705; K_trans; 1.
DR   TIGRFAMs; TIGR00794; kup; 1.
PE   3: Inferred from homology;
KW   Cell inner membrane; Cell membrane; Ion transport; Membrane; Potassium;
KW   Potassium transport; Symport; Transmembrane; Transmembrane helix;
KW   Transport.
FT   CHAIN           1..622
FT                   /note="Low affinity potassium transport system protein kup"
FT                   /id="PRO_1000190262"
FT   TRANSMEM        9..29
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01522"
FT   TRANSMEM        49..69
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01522"
FT   TRANSMEM        103..123
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01522"
FT   TRANSMEM        137..157
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01522"
FT   TRANSMEM        165..185
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01522"
FT   TRANSMEM        213..233
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01522"
FT   TRANSMEM        247..267
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01522"
FT   TRANSMEM        287..309
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01522"
FT   TRANSMEM        337..357
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01522"
FT   TRANSMEM        363..383
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01522"
FT   TRANSMEM        396..416
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01522"
FT   TRANSMEM        419..439
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01522"
SQ   SEQUENCE   622 AA;  69294 MW;  E556791ABF9B8D25 CRC64;
     MSTDNKQSLP AITLAAIGVV YGDIGTSPLY TLRECLSGQF GFGVERDAVF GFLSLIFWLL
     IFVVSIKYLT FVMRADNAGE GGILTLMSLA GRNTSARTTS MLVIMGLIGG SFFYGEVVIT
     PAISVMSAIE GLEIVAPQLD TWIVPLSIIV LTLLFMIQKH GTAMVGKLFA PIMLTWFLIL
     AGLGLRSIIA NPEVLHALNP MWAVHFFLEY KTVSFIALGA VVLSITGVEA LYADMGHFGK
     FPIRLAWFTV VLPSLTLNYF GQGALLLKNP EAIKNPFFLL APDWALIPLL IIAALATVIA
     SQAVISGVFS LTRQAVRLGY LSPMRIIHTS EMESGQIYIP FVNWMLYVAV VIVIVSFEHS
     SNLAAAYGIA VTGTMVLTSI LSTTVARQNW HWNKYFVALI LIAFLCVDIP LFTANLDKLL
     SGGWLPLSLG TVMFIVMTTW KSERFRLLRR MHEHGNSLEA MIASLEKSPP VRVPGTAVYM
     SRAINVIPFA LMHNLKHNKV LHERVILLTL RTEDAPYVHN VRRVQIEQLS PTFWRVVASY
     GWRETPNVEE VFHRCGLEGL SCRMMETSFF MSHESLILGK RPWYLRLRGK LYLLLQRNAL
     RAPDQFEIPP NRVIELGTQV EI