ID   CRCB1_PROM9             Reviewed;         109 AA.
AC   Q318B0;
DT   17-OCT-2006, integrated into UniProtKB/Swiss-Prot.
DT   06-DEC-2005, sequence version 1.
DT   03-AUG-2022, entry version 73.
DE   RecName: Full=Putative fluoride ion transporter CrcB 1;
GN   Name=crcB1; OrderedLocusNames=PMT9312_1725, PMT9312_1724;
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:0000250}.
CC   -!- SUBCELLULAR LOCATION: Cell inner membrane {ECO:0000250}; Multi-pass
CC       membrane protein {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the CrcB (TC 9.B.71) family. {ECO:0000305}.
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DR   EMBL; CP000111; ABB50785.1; -; Genomic_DNA.
DR   RefSeq; WP_011377266.1; NC_007577.1.
DR   AlphaFoldDB; Q318B0; -.
DR   SMR; Q318B0; -.
DR   STRING; 74546.PMT9312_1724; -.
DR   EnsemblBacteria; ABB50785; ABB50785; PMT9312_1724.
DR   KEGG; pmi:PMT9312_1724; -.
DR   HOGENOM; CLU_2181556_0_0_3; -.
DR   OMA; WISRKIT; -.
DR   OrthoDB; 2095515at2; -.
DR   Proteomes; UP000002715; 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:1903425; F:fluoride transmembrane transporter activity; IEA:UniProt.
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..109
FT                   /note="Putative fluoride ion transporter CrcB 1"
FT                   /id="PRO_0000252909"
FT   TRANSMEM        21..41
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        52..72
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        84..104
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   109 AA;  12905 MW;  30B57646DF78C13B CRC64;
     MKIKIYIYIL LACYIASFLR LFINNNFIVS IIGSLLFGFF IDKRLSYSIE KIILSGFFSC
     FTSFSGFIYF LYKVFNQGDL MKFIIFCNLI IIINLLVMYF GFWISRKIT