ID   CRCB2_METAC             Reviewed;         126 AA.
AC   Q8TIQ4;
DT   19-OCT-2002, integrated into UniProtKB/Swiss-Prot.
DT   19-OCT-2002, sequence version 2.
DT   25-MAY-2022, entry version 104.
DE   RecName: Full=Putative fluoride ion transporter CrcB 2 {ECO:0000255|HAMAP-Rule:MF_00454};
GN   Name=crcB2 {ECO:0000255|HAMAP-Rule:MF_00454}; OrderedLocusNames=MA_4088;
OS   Methanosarcina acetivorans (strain ATCC 35395 / DSM 2834 / JCM 12185 /
OS   C2A).
OC   Archaea; Euryarchaeota; Stenosarchaea group; Methanomicrobia;
OC   Methanosarcinales; Methanosarcinaceae; Methanosarcina.
OX   NCBI_TaxID=188937;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 35395 / DSM 2834 / JCM 12185 / C2A;
RX   PubMed=11932238; DOI=10.1101/gr.223902;
RA   Galagan J.E., Nusbaum C., Roy A., Endrizzi M.G., Macdonald P., FitzHugh W.,
RA   Calvo S., Engels R., Smirnov S., Atnoor D., Brown A., Allen N., Naylor J.,
RA   Stange-Thomann N., DeArellano K., Johnson R., Linton L., McEwan P.,
RA   McKernan K., Talamas J., Tirrell A., Ye W., Zimmer A., Barber R.D.,
RA   Cann I., Graham D.E., Grahame D.A., Guss A.M., Hedderich R.,
RA   Ingram-Smith C., Kuettner H.C., Krzycki J.A., Leigh J.A., Li W., Liu J.,
RA   Mukhopadhyay B., Reeve J.N., Smith K., Springer T.A., Umayam L.A.,
RA   White O., White R.H., de Macario E.C., Ferry J.G., Jarrell K.F., Jing H.,
RA   Macario A.J.L., Paulsen I.T., Pritchett M., Sowers K.R., Swanson R.V.,
RA   Zinder S.H., Lander E., Metcalf W.W., Birren B.;
RT   "The genome of Methanosarcina acetivorans reveals extensive metabolic and
RT   physiological diversity.";
RL   Genome Res. 12:532-542(2002).
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 membrane {ECO:0000255|HAMAP-Rule:MF_00454};
CC       Multi-pass membrane protein {ECO:0000255|HAMAP-Rule:MF_00454}.
CC   -!- SIMILARITY: Belongs to the CrcB (TC 9.B.71) family. {ECO:0000255|HAMAP-
CC       Rule:MF_00454}.
CC   -!- SEQUENCE CAUTION:
CC       Sequence=AAM07436.1; Type=Erroneous initiation; Evidence={ECO:0000305};
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DR   EMBL; AE010299; AAM07436.1; ALT_INIT; Genomic_DNA.
DR   RefSeq; WP_048066568.1; NC_003552.1.
DR   AlphaFoldDB; Q8TIQ4; -.
DR   SMR; Q8TIQ4; -.
DR   EnsemblBacteria; AAM07436; AAM07436; MA_4088.
DR   GeneID; 1475982; -.
DR   KEGG; mac:MA_4088; -.
DR   HOGENOM; CLU_114342_1_4_2; -.
DR   InParanoid; Q8TIQ4; -.
DR   OMA; PEWAVAN; -.
DR   OrthoDB; 112898at2157; -.
DR   PhylomeDB; Q8TIQ4; -.
DR   Proteomes; UP000002487; 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.
PE   3: Inferred from homology;
KW   Cell membrane; Membrane; Reference proteome; Transmembrane;
KW   Transmembrane helix; Transport.
FT   CHAIN           1..126
FT                   /note="Putative fluoride ion transporter CrcB 2"
FT                   /id="PRO_0000110226"
FT   TRANSMEM        11..31
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00454"
FT   TRANSMEM        34..54
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00454"
FT   TRANSMEM        66..86
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   126 AA;  13496 MW;  F5D42DC6C3AFED33 CRC64;
     MPSQDKEIDK IFLIGAGGFL GAVCRFLLCE LVEGQLGILS VNVIGSFMLG MIMYDTEYLG
     FIGPKGKIAF GTGFMGAFTT FSTFAVQSFS LPFIPALGNI SANIFLTLTG VFFGRSVIKA
     LSSREI