ID   CRCB2_PROM9             Reviewed;         122 AA.
AC   Q318A9;
DT   17-OCT-2006, integrated into UniProtKB/Swiss-Prot.
DT   06-DEC-2005, sequence version 1.
DT   03-AUG-2022, entry version 81.
DE   RecName: Full=Putative fluoride ion transporter CrcB 2 {ECO:0000255|HAMAP-Rule:MF_00454};
GN   Name=crcB2 {ECO:0000255|HAMAP-Rule:MF_00454};
GN   OrderedLocusNames=PMT9312_1726, PMT9312_1725;
OS   Prochlorococcus marinus (strain MIT 9312).
OC   Bacteria; Cyanobacteria; Synechococcales; Prochlorococcaceae;
OC   Prochlorococcus.
OX   NCBI_TaxID=74546;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=MIT 9312;
RG   US DOE Joint Genome Institute;
RA   Copeland A., Lucas S., Lapidus A., Barry K., Detter J.C., Glavina T.,
RA   Hammon N., Israni S., Pitluck S., Thiel J., Schmutz J., Larimer F.,
RA   Land M., Kyrpides N., Lykidis A., Richardson P.;
RT   "Complete sequence of Prochlorococcus marinus str. MIT 9312.";
RL   Submitted (JUL-2005) to the EMBL/GenBank/DDBJ databases.
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; CP000111; ABB50786.1; -; Genomic_DNA.
DR   RefSeq; WP_011377267.1; NC_007577.1.
DR   AlphaFoldDB; Q318A9; -.
DR   SMR; Q318A9; -.
DR   STRING; 74546.PMT9312_1725; -.
DR   EnsemblBacteria; ABB50786; ABB50786; PMT9312_1725.
DR   KEGG; pmi:PMT9312_1725; -.
DR   eggNOG; COG0239; Bacteria.
DR   HOGENOM; CLU_114342_2_3_3; -.
DR   OMA; HFEPMVP; -.
DR   OrthoDB; 1942863at2; -.
DR   Proteomes; UP000002715; Chromosome.
DR   GO; GO:0005887; C:integral component of plasma membrane; IEA:UniProtKB-UniRule.
DR   GO; GO:1903425; F:fluoride transmembrane transporter activity; IEA:UniProt.
DR   HAMAP; MF_00454; CrcB; 1.
DR   InterPro; IPR003691; CrcB.
DR   Pfam; PF02537; CRCB; 1.
PE   3: Inferred from homology;
KW   Cell inner membrane; Cell membrane; Membrane; Transmembrane;
KW   Transmembrane helix; Transport.
FT   CHAIN           1..122
FT                   /note="Putative fluoride ion transporter CrcB 2"
FT                   /id="PRO_0000252910"
FT   TRANSMEM        3..23
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00454"
FT   TRANSMEM        38..58
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00454"
FT   TRANSMEM        62..82
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00454"
FT   TRANSMEM        93..113
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00454"
SQ   SEQUENCE   122 AA;  14308 MW;  5AB64BA2A9B26EA8 CRC64;
     MDITAISLVL FGSTFGLIFR MFIQNNLKIN IGFNIQNTSI VNFIASFFLG ILLALNLTNN
     NLLLLFYIGF LGCFSTFSSF IYQLFVLLQK RKFMHLFFHY FEVIIISFIC FYLGYYLMQI
     IK