ID   FIEF_CITK8              Reviewed;         300 AA.
AC   A8AL14;
DT   20-MAY-2008, integrated into UniProtKB/Swiss-Prot.
DT   23-OCT-2007, sequence version 1.
DT   03-AUG-2022, entry version 88.
DE   RecName: Full=Cation-efflux pump FieF {ECO:0000255|HAMAP-Rule:MF_01425};
GN   Name=fieF {ECO:0000255|HAMAP-Rule:MF_01425}; OrderedLocusNames=CKO_03086;
OS   Citrobacter koseri (strain ATCC BAA-895 / CDC 4225-83 / SGSC4696).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; Citrobacter.
OX   NCBI_TaxID=290338;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC BAA-895 / CDC 4225-83 / SGSC4696;
RG   The Citrobacter koseri Genome Sequencing Project;
RA   McClelland M., Sanderson E.K., Porwollik S., Spieth J., Clifton W.S.,
RA   Latreille P., Courtney L., Wang C., Pepin K., Bhonagiri V., Nash W.,
RA   Johnson M., Thiruvilangam P., Wilson R.;
RL   Submitted (AUG-2007) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Divalent metal cation transporter which exports Zn(2+),
CC       Cd(2+) and possibly Fe(2+). May be involved in zinc and iron
CC       detoxification by efflux. {ECO:0000255|HAMAP-Rule:MF_01425}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=H(+)(out) + Zn(2+)(in) = H(+)(in) + Zn(2+)(out);
CC         Xref=Rhea:RHEA:28839, ChEBI:CHEBI:15378, ChEBI:CHEBI:29105;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01425};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=Cd(2+)(in) + H(+)(out) = Cd(2+)(out) + H(+)(in);
CC         Xref=Rhea:RHEA:28739, ChEBI:CHEBI:15378, ChEBI:CHEBI:48775;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01425};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=Fe(2+)(in) + H(+)(out) = Fe(2+)(out) + H(+)(in);
CC         Xref=Rhea:RHEA:29439, ChEBI:CHEBI:15378, ChEBI:CHEBI:29033;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01425};
CC   -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_01425}.
CC   -!- SUBCELLULAR LOCATION: Cell inner membrane {ECO:0000255|HAMAP-
CC       Rule:MF_01425}; Multi-pass membrane protein {ECO:0000255|HAMAP-
CC       Rule:MF_01425}.
CC   -!- SIMILARITY: Belongs to the cation diffusion facilitator (CDF)
CC       transporter (TC 2.A.4) family. FieF subfamily. {ECO:0000255|HAMAP-
CC       Rule:MF_01425}.
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DR   EMBL; CP000822; ABV14177.1; -; Genomic_DNA.
DR   RefSeq; WP_012133884.1; NC_009792.1.
DR   AlphaFoldDB; A8AL14; -.
DR   SMR; A8AL14; -.
DR   STRING; 290338.CKO_03086; -.
DR   EnsemblBacteria; ABV14177; ABV14177; CKO_03086.
DR   GeneID; 45136886; -.
DR   KEGG; cko:CKO_03086; -.
DR   HOGENOM; CLU_013430_3_0_6; -.
DR   OMA; IEMHLIV; -.
DR   OrthoDB; 381612at2; -.
DR   Proteomes; UP000008148; Chromosome.
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:0046873; F:metal ion transmembrane transporter activity; IEA:InterPro.
DR   GO; GO:0006826; P:iron ion transport; IEA:InterPro.
DR   GO; GO:0006829; P:zinc ion transport; IEA:InterPro.
DR   Gene3D; 1.20.1510.10; -; 1.
DR   Gene3D; 3.30.70.1350; -; 1.
DR   HAMAP; MF_01425; Cation_efflux_FieF; 1.
DR   InterPro; IPR002524; Cation_efflux.
DR   InterPro; IPR027470; Cation_efflux_CTD.
DR   InterPro; IPR036837; Cation_efflux_CTD_sf.
DR   InterPro; IPR023783; Cation_efflux_FieF.
DR   InterPro; IPR027469; Cation_efflux_TMD_sf.
DR   Pfam; PF01545; Cation_efflux; 1.
DR   Pfam; PF16916; ZT_dimer; 1.
DR   SUPFAM; SSF160240; SSF160240; 1.
DR   SUPFAM; SSF161111; SSF161111; 1.
DR   TIGRFAMs; TIGR01297; CDF; 1.
PE   3: Inferred from homology;
KW   Cell inner membrane; Cell membrane; Ion transport; Iron; Iron transport;
KW   Membrane; Metal-binding; Reference proteome; Transmembrane;
KW   Transmembrane helix; Transport; Zinc; Zinc transport.
FT   CHAIN           1..300
FT                   /note="Cation-efflux pump FieF"
FT                   /id="PRO_1000087419"
FT   TRANSMEM        12..32
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01425"
FT   TRANSMEM        39..59
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01425"
FT   TRANSMEM        82..102
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01425"
FT   TRANSMEM        114..134
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01425"
FT   TRANSMEM        164..184
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01425"
FT   BINDING         45
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01425"
FT   BINDING         49
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01425"
FT   BINDING         153
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01425"
FT   BINDING         157
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01425"
SQ   SEQUENCE   300 AA;  33118 MW;  86F55E09FAA2BC31 CRC64;
     MNQTYGRLVS RAAIAATVMA SLLLLIKIFA WWYTGSVSIL AALVDSLVDI AASLTNLLVV
     RYSLQPADDE HTFGHGKAES LAALAQSMFI SGSALFLFLT GIQHLITPTP MNEPGVGIVV
     TLIALVCTII LVTFQRWVVR KTQSQAVRAD MLHYQSDVMM NGAILVALGL AWYGWHRADA
     LFALGIGIYI LYSALRMGYE AVQSLLDRAL PDEERQEIID IVTSWPGVNG AHDLRTRQSG
     PTRFIQIHLE MEDNLPLVQA HLVAEQVEQA ILRRFPGSDV IIHQDPCSVV PREGKRFELS