KEFB_ECO45
ID KEFB_ECO45 Reviewed; 601 AA.
AC B7MCW6;
DT 14-APR-2009, integrated into UniProtKB/Swiss-Prot.
DT 10-FEB-2009, sequence version 1.
DT 25-MAY-2022, entry version 79.
DE RecName: Full=Glutathione-regulated potassium-efflux system protein KefB {ECO:0000255|HAMAP-Rule:MF_01412};
DE AltName: Full=K(+)/H(+) antiporter {ECO:0000255|HAMAP-Rule:MF_01412};
GN Name=kefB {ECO:0000255|HAMAP-Rule:MF_01412}; OrderedLocusNames=ECS88_3739;
OS Escherichia coli O45:K1 (strain S88 / ExPEC).
OC Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC Enterobacteriaceae; Escherichia.
OX NCBI_TaxID=585035;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=S88 / ExPEC;
RX PubMed=19165319; DOI=10.1371/journal.pgen.1000344;
RA Touchon M., Hoede C., Tenaillon O., Barbe V., Baeriswyl S., Bidet P.,
RA Bingen E., Bonacorsi S., Bouchier C., Bouvet O., Calteau A., Chiapello H.,
RA Clermont O., Cruveiller S., Danchin A., Diard M., Dossat C., Karoui M.E.,
RA Frapy E., Garry L., Ghigo J.M., Gilles A.M., Johnson J., Le Bouguenec C.,
RA Lescat M., Mangenot S., Martinez-Jehanne V., Matic I., Nassif X., Oztas S.,
RA Petit M.A., Pichon C., Rouy Z., Ruf C.S., Schneider D., Tourret J.,
RA Vacherie B., Vallenet D., Medigue C., Rocha E.P.C., Denamur E.;
RT "Organised genome dynamics in the Escherichia coli species results in
RT highly diverse adaptive paths.";
RL PLoS Genet. 5:E1000344-E1000344(2009).
CC -!- FUNCTION: Pore-forming subunit of a potassium efflux system that
CC confers protection against electrophiles. Catalyzes K(+)/H(+) antiport.
CC {ECO:0000255|HAMAP-Rule:MF_01412}.
CC -!- SUBUNIT: Interacts with the regulatory subunit KefG.
CC {ECO:0000255|HAMAP-Rule:MF_01412}.
CC -!- SUBCELLULAR LOCATION: Cell inner membrane {ECO:0000255|HAMAP-
CC Rule:MF_01412}; Multi-pass membrane protein {ECO:0000255|HAMAP-
CC Rule:MF_01412}.
CC -!- SIMILARITY: Belongs to the monovalent cation:proton antiporter 2 (CPA2)
CC transporter (TC 2.A.37) family. KefB subfamily. {ECO:0000255|HAMAP-
CC Rule:MF_01412}.
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DR EMBL; CU928161; CAR04955.1; -; Genomic_DNA.
DR RefSeq; WP_000399162.1; NC_011742.1.
DR AlphaFoldDB; B7MCW6; -.
DR SMR; B7MCW6; -.
DR EnsemblBacteria; CAR04955; CAR04955; ECS88_3739.
DR KEGG; ecz:ECS88_3739; -.
DR HOGENOM; CLU_005126_9_3_6; -.
DR OMA; IRPFHDV; -.
DR Proteomes; UP000000747; Chromosome.
DR GO; GO:0005887; C:integral component of plasma membrane; IEA:UniProtKB-UniRule.
DR GO; GO:0015503; F:glutathione-regulated potassium exporter activity; IEA:UniProtKB-UniRule.
DR GO; GO:0015299; F:solute:proton antiporter activity; IEA:InterPro.
DR Gene3D; 1.20.1530.20; -; 1.
DR HAMAP; MF_01412; K_H_efflux_KefB; 1.
DR InterPro; IPR006153; Cation/H_exchanger.
DR InterPro; IPR004771; K/H_exchanger.
DR InterPro; IPR020884; K_H_efflux_KefB.
DR InterPro; IPR038770; Na+/solute_symporter_sf.
DR InterPro; IPR036291; NAD(P)-bd_dom_sf.
DR InterPro; IPR003148; RCK_N.
DR Pfam; PF00999; Na_H_Exchanger; 1.
DR Pfam; PF02254; TrkA_N; 1.
DR SUPFAM; SSF51735; SSF51735; 1.
DR TIGRFAMs; TIGR00932; 2a37; 1.
DR PROSITE; PS51201; RCK_N; 1.
PE 3: Inferred from homology;
KW Antiport; Cell inner membrane; Cell membrane; Ion transport; Membrane;
KW Potassium; Potassium transport; Transmembrane; Transmembrane helix;
KW Transport.
FT CHAIN 1..601
FT /note="Glutathione-regulated potassium-efflux system
FT protein KefB"
FT /id="PRO_1000145516"
FT TRANSMEM 4..24
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01412"
FT TRANSMEM 29..49
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01412"
FT TRANSMEM 55..75
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01412"
FT TRANSMEM 87..107
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01412"
FT TRANSMEM 115..135
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01412"
FT TRANSMEM 152..172
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01412"
FT TRANSMEM 177..197
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01412"
FT TRANSMEM 207..227
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01412"
FT TRANSMEM 230..250
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01412"
FT TRANSMEM 268..288
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01412"
FT TRANSMEM 291..311
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01412"
FT TRANSMEM 324..344
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01412"
FT TRANSMEM 356..376
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01412"
FT DOMAIN 402..524
FT /note="RCK N-terminal"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01412"
SQ SEQUENCE 601 AA; 66463 MW; 407B03AFB287B574 CRC64;
MEGSDFLLAG VLFLFAAVAA VPLASRLGIG AVLGYLLAGI AIGPWGLGFI SDVDEILHFS
ELGVVFLMFI IGLELNPSKL WQLRRSIFGV GAAQVLLSAA LLAGLLMLTH FSWQAAVVGG
IGLAMSSTAM ALQLMREKGM NRSESGQLGF SVLLFQDLAV IPALALVPLL AGSADEHFDW
MKIGMKVLAF VGMLIGGRYL LRPVFRFIAA SGVREVFTAA TLLLVLGSAL FMDALGLSMA
LGTFIAGVLL AESEYRHELE TAIDPFKGLL LGLFFISVGM SLNLGVLYTH LLWVVISVVV
LVAVKILVLY LLARLYGVRS SERMQFAGVL SQGGEFAFVL FSTASSQRLF QGDQMALLLV
TVTLSMMTTP LLMKLVDKWL SRQFNGPEEE DEKPWVNDDK PQVIVVGFGR FGQVIGRLLM
ANKMRITVLE RDISAVNLMR KYGYKVYYGD ATQVDLLRSA GAEAAESIVI TCNEPEDTMK
LVEICQQHFP HLHILARARG RVEAHELLQA GVTQFSRETF SSALELGRKT LVTLGMHPHQ
AQRAQLHFRR LDMRMLRELI PMHADTVQIS RAREARRELE EIFQREMQQE RRQLDGWDEF
E
