ID   CRCB_GEOSL              Reviewed;         124 AA.
AC   P61389;
DT   24-MAY-2004, integrated into UniProtKB/Swiss-Prot.
DT   29-MAY-2013, sequence version 2.
DT   25-MAY-2022, entry version 88.
DE   RecName: Full=Putative fluoride ion transporter CrcB {ECO:0000255|HAMAP-Rule:MF_00454};
GN   Name=crcB {ECO:0000255|HAMAP-Rule:MF_00454}; OrderedLocusNames=GSU0503;
OS   Geobacter sulfurreducens (strain ATCC 51573 / DSM 12127 / PCA).
OC   Bacteria; Proteobacteria; Deltaproteobacteria; Desulfuromonadales;
OC   Geobacteraceae; Geobacter.
OX   NCBI_TaxID=243231;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 51573 / DSM 12127 / PCA;
RX   PubMed=14671304; DOI=10.1126/science.1088727;
RA   Methe B.A., Nelson K.E., Eisen J.A., Paulsen I.T., Nelson W.C.,
RA   Heidelberg J.F., Wu D., Wu M., Ward N.L., Beanan M.J., Dodson R.J.,
RA   Madupu R., Brinkac L.M., Daugherty S.C., DeBoy R.T., Durkin A.S.,
RA   Gwinn M.L., Kolonay J.F., Sullivan S.A., Haft D.H., Selengut J.,
RA   Davidsen T.M., Zafar N., White O., Tran B., Romero C., Forberger H.A.,
RA   Weidman J.F., Khouri H.M., Feldblyum T.V., Utterback T.R., Van Aken S.E.,
RA   Lovley D.R., Fraser C.M.;
RT   "Genome of Geobacter sulfurreducens: metal reduction in subsurface
RT   environments.";
RL   Science 302:1967-1969(2003).
CC   -!- FUNCTION: Important for reducing fluoride concentration in the cell,
CC       thus reducing its toxicity. {ECO:0000255|HAMAP-Rule:MF_00454}.
CC   -!- SUBCELLULAR LOCATION: Cell inner membrane {ECO:0000255|HAMAP-
CC       Rule:MF_00454}; Multi-pass membrane protein {ECO:0000255|HAMAP-
CC       Rule:MF_00454}.
CC   -!- SIMILARITY: Belongs to the CrcB (TC 9.B.71) family. {ECO:0000255|HAMAP-
CC       Rule:MF_00454}.
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DR   EMBL; AE017180; AAR33834.2; -; Genomic_DNA.
DR   RefSeq; NP_951561.2; NC_002939.5.
DR   RefSeq; WP_010941171.1; NC_002939.5.
DR   AlphaFoldDB; P61389; -.
DR   SMR; P61389; -.
DR   STRING; 243231.GSU0503; -.
DR   EnsemblBacteria; AAR33834; AAR33834; GSU0503.
DR   KEGG; gsu:GSU0503; -.
DR   PATRIC; fig|243231.5.peg.504; -.
DR   eggNOG; COG0239; Bacteria.
DR   HOGENOM; CLU_114342_2_3_7; -.
DR   InParanoid; P61389; -.
DR   Proteomes; UP000000577; Chromosome.
DR   GO; GO:0005887; C:integral component of plasma membrane; IBA:GO_Central.
DR   GO; GO:1903425; F:fluoride transmembrane transporter activity; IBA:GO_Central.
DR   GO; GO:1903424; P:fluoride transmembrane transport; IBA:GO_Central.
DR   HAMAP; MF_00454; CrcB; 1.
DR   InterPro; IPR003691; CrcB.
DR   PANTHER; PTHR28259; PTHR28259; 1.
DR   Pfam; PF02537; CRCB; 1.
DR   TIGRFAMs; TIGR00494; crcB; 1.
PE   3: Inferred from homology;
KW   Cell inner membrane; Cell membrane; Membrane; Reference proteome;
KW   Transmembrane; Transmembrane helix; Transport.
FT   CHAIN           1..124
FT                   /note="Putative fluoride ion transporter CrcB"
FT                   /id="PRO_0000110104"
FT   TRANSMEM        4..24
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00454"
FT   TRANSMEM        32..52
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00454"
FT   TRANSMEM        68..88
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00454"
FT   TRANSMEM        101..121
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00454"
SQ   SEQUENCE   124 AA;  13051 MW;  65471AF59F60D579 CRC64;
     MTTILAIAVF GAVGCVARYL LAGGVYALAG RAFPWGTLAV NVIGAFLIGL IMEAALRTTL
     MSQELRLGLT IGFLGGFTTF STFSYETFKL LEDGEFFSAS LNVLASVALC LVGTWAGIMA
     ARQL