ID B0JNB2_MICAN Unreviewed; 129 AA.
AC B0JNB2;
DT 18-MAR-2008, integrated into UniProtKB/TrEMBL.
DT 18-MAR-2008, sequence version 1.
DT 27-MAR-2024, entry version 92.
DE RecName: Full=Fluoride-specific ion channel FluC {ECO:0000256|HAMAP-Rule:MF_00454};
GN Name=fluC {ECO:0000256|HAMAP-Rule:MF_00454};
GN Synonyms=crcB {ECO:0000256|HAMAP-Rule:MF_00454};
GN OrderedLocusNames=MAE_04540 {ECO:0000313|EMBL:BAG00276.1};
OS Microcystis aeruginosa (strain NIES-843 / IAM M-2473).
OC Bacteria; Cyanobacteriota; Cyanophyceae; Oscillatoriophycideae;
OC Chroococcales; Microcystaceae; Microcystis.
OX NCBI_TaxID=449447 {ECO:0000313|EMBL:BAG00276.1, ECO:0000313|Proteomes:UP000001510};
RN [1] {ECO:0000313|EMBL:BAG00276.1, ECO:0000313|Proteomes:UP000001510}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=NIES-843 {ECO:0000313|EMBL:BAG00276.1,
RC ECO:0000313|Proteomes:UP000001510};
RX PubMed=18192279; DOI=10.1093/dnares/dsm026;
RA Kaneko T., Nakajima N., Okamoto S., Suzuki I., Tanabe Y., Tamaoki M.,
RA Nakamura Y., Kasai F., Watanabe A., Kawashima K., Kishida Y., Ono A.,
RA Shimizu Y., Takahashi C., Minami C., Fujishiro T., Kohara M., Katoh M.,
RA Nakazaki N., Nakayama S., Yamada M., Tabata S., Watanabe M.M.;
RT "Complete genomic structure of the bloom-forming toxic cyanobacterium
RT Microcystis aeruginosa NIES-843.";
RL DNA Res. 14:247-256(2007).
CC -!- FUNCTION: Fluoride-specific ion channel. Important for reducing
CC fluoride concentration in the cell, thus reducing its toxicity.
CC {ECO:0000256|HAMAP-Rule:MF_00454}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=fluoride(in) = fluoride(out); Xref=Rhea:RHEA:76159,
CC ChEBI:CHEBI:17051; Evidence={ECO:0000256|ARBA:ARBA00035585};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:76160;
CC Evidence={ECO:0000256|ARBA:ARBA00035585};
CC -!- ACTIVITY REGULATION: Na(+) is not transported, but it plays an
CC essential structural role and its presence is essential for fluoride
CC channel function. {ECO:0000256|HAMAP-Rule:MF_00454}.
CC -!- SUBCELLULAR LOCATION: Cell inner membrane {ECO:0000256|HAMAP-
CC Rule:MF_00454}; Multi-pass membrane protein {ECO:0000256|HAMAP-
CC Rule:MF_00454}. Membrane {ECO:0000256|ARBA:ARBA00004141}; Multi-pass
CC membrane protein {ECO:0000256|ARBA:ARBA00004141}.
CC -!- SIMILARITY: Belongs to the fluoride channel Fluc/FEX (TC 1.A.43)
CC family. {ECO:0000256|ARBA:ARBA00035120, ECO:0000256|HAMAP-
CC Rule:MF_00454}.
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DR EMBL; AP009552; BAG00276.1; -; Genomic_DNA.
DR RefSeq; WP_012264107.1; NC_010296.1.
DR AlphaFoldDB; B0JNB2; -.
DR STRING; 449447.MAE_04540; -.
DR PaxDb; 449447-MAE_04540; -.
DR EnsemblBacteria; BAG00276; BAG00276; MAE_04540.
DR KEGG; mar:MAE_04540; -.
DR PATRIC; fig|449447.4.peg.428; -.
DR eggNOG; COG0239; Bacteria.
DR HOGENOM; CLU_114342_3_2_3; -.
DR BioCyc; MAER449447:MAE_RS02090-MONOMER; -.
DR Proteomes; UP000001510; Chromosome.
DR GO; GO:0005886; C:plasma membrane; IEA:UniProtKB-SubCell.
DR GO; GO:0062054; F:fluoride channel activity; IEA:UniProtKB-UniRule.
DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR GO; GO:0140114; P:cellular detoxification of fluoride; IEA:UniProtKB-UniRule.
DR HAMAP; MF_00454; CrcB; 1.
DR InterPro; IPR003691; FluC.
DR NCBIfam; TIGR00494; crcB; 1.
DR PANTHER; PTHR28259; FLUORIDE EXPORT PROTEIN 1-RELATED; 1.
DR PANTHER; PTHR28259:SF1; FLUORIDE EXPORT PROTEIN 1-RELATED; 1.
DR Pfam; PF02537; CRCB; 1.
PE 3: Inferred from homology;
KW Cell inner membrane {ECO:0000256|HAMAP-Rule:MF_00454};
KW Cell membrane {ECO:0000256|ARBA:ARBA00022475, ECO:0000256|HAMAP-
KW Rule:MF_00454};
KW Ion channel {ECO:0000256|ARBA:ARBA00023303, ECO:0000256|HAMAP-
KW Rule:MF_00454}; Ion transport {ECO:0000256|HAMAP-Rule:MF_00454};
KW Membrane {ECO:0000256|ARBA:ARBA00023136, ECO:0000256|HAMAP-Rule:MF_00454};
KW Metal-binding {ECO:0000256|HAMAP-Rule:MF_00454};
KW Sodium {ECO:0000256|HAMAP-Rule:MF_00454};
KW Transmembrane {ECO:0000256|ARBA:ARBA00022692, ECO:0000256|HAMAP-
KW Rule:MF_00454};
KW Transmembrane helix {ECO:0000256|ARBA:ARBA00022989, ECO:0000256|HAMAP-
KW Rule:MF_00454}; Transport {ECO:0000256|HAMAP-Rule:MF_00454}.
FT TRANSMEM 36..58
FT /note="Helical"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00454"
FT TRANSMEM 70..94
FT /note="Helical"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00454"
FT TRANSMEM 101..128
FT /note="Helical"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00454"
FT BINDING 78
FT /ligand="Na(+)"
FT /ligand_id="ChEBI:CHEBI:29101"
FT /ligand_note="structural"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00454"
FT BINDING 81
FT /ligand="Na(+)"
FT /ligand_id="ChEBI:CHEBI:29101"
FT /ligand_note="structural"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00454"
SQ SEQUENCE 129 AA; 14380 MW; FAE94DE49538A649 CRC64;
MSDLNDVFAI VAGAVPGALS RYHITEWTKA KFGLRFPYGT FIINLTGCLA IGFFWAILPS
FTFYSHQLDL MVRTGFLGAY TTFSTYSLDI LILWRNQQNF LSLFFAFASI IFGLIAVRIG
AAIAQVFLG
//
