ID   CMPB_SYNP6              Reviewed;         278 AA.
AC   Q5MZ55;
DT   01-JUL-2008, integrated into UniProtKB/Swiss-Prot.
DT   01-FEB-2005, sequence version 1.
DT   25-MAY-2022, entry version 97.
DE   RecName: Full=Bicarbonate transport system permease protein CmpB;
GN   Name=cmpB; OrderedLocusNames=syc2475_d;
OS   Synechococcus sp. (strain ATCC 27144 / PCC 6301 / SAUG 1402/1) (Anacystis
OS   nidulans).
OC   Bacteria; Cyanobacteria; Synechococcales; Synechococcaceae; Synechococcus.
OX   NCBI_TaxID=269084;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 27144 / PCC 6301 / SAUG 1402/1;
RX   PubMed=17211581; DOI=10.1007/s11120-006-9122-4;
RA   Sugita C., Ogata K., Shikata M., Jikuya H., Takano J., Furumichi M.,
RA   Kanehisa M., Omata T., Sugiura M., Sugita M.;
RT   "Complete nucleotide sequence of the freshwater unicellular cyanobacterium
RT   Synechococcus elongatus PCC 6301 chromosome: gene content and
RT   organization.";
RL   Photosyn. Res. 93:55-67(2007).
CC   -!- FUNCTION: Part of the ABC transporter complex CmpABCD involved in
CC       bicarbonate transport. Probably responsible for the translocation of
CC       the substrate across the membrane (By similarity). {ECO:0000250}.
CC   -!- SUBUNIT: The complex is composed of two ATP-binding proteins (CmpC and
CC       CmpD), a transmembrane protein (CmpB) and a solute-binding protein
CC       (CmpA). {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Cell inner membrane {ECO:0000305}; Multi-pass
CC       membrane protein {ECO:0000255|PROSITE-ProRule:PRU00441}.
CC   -!- INDUCTION: By carbon dioxide-limited conditions, probably via CmpR.
CC       {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the binding-protein-dependent transport system
CC       permease family. {ECO:0000305}.
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DR   EMBL; AP008231; BAD80665.1; -; Genomic_DNA.
DR   RefSeq; WP_011244785.1; NC_006576.1.
DR   AlphaFoldDB; Q5MZ55; -.
DR   SMR; Q5MZ55; -.
DR   STRING; 269084.syc2475_d; -.
DR   EnsemblBacteria; BAD80665; BAD80665; syc2475_d.
DR   KEGG; syc:syc2475_d; -.
DR   eggNOG; COG0600; Bacteria.
DR   OMA; LIEFYRP; -.
DR   Proteomes; UP000001175; 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:0015112; F:nitrate transmembrane transporter activity; IEA:InterPro.
DR   CDD; cd06261; TM_PBP2; 1.
DR   Gene3D; 1.10.3720.10; -; 1.
DR   InterPro; IPR000515; MetI-like.
DR   InterPro; IPR035906; MetI-like_sf.
DR   InterPro; IPR005889; NtrB.
DR   Pfam; PF00528; BPD_transp_1; 1.
DR   SUPFAM; SSF161098; SSF161098; 1.
DR   TIGRFAMs; TIGR01183; ntrB; 1.
DR   PROSITE; PS50928; ABC_TM1; 1.
PE   3: Inferred from homology;
KW   Cell inner membrane; Cell membrane; Ion transport; Membrane; Transmembrane;
KW   Transmembrane helix; Transport.
FT   CHAIN           1..278
FT                   /note="Bicarbonate transport system permease protein CmpB"
FT                   /id="PRO_0000341961"
FT   TRANSMEM        24..44
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00441"
FT   TRANSMEM        93..113
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00441"
FT   TRANSMEM        124..144
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00441"
FT   TRANSMEM        151..171
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00441"
FT   TRANSMEM        196..216
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00441"
FT   TRANSMEM        217..237
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00441"
FT   TRANSMEM        249..269
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00441"
FT   DOMAIN          86..267
FT                   /note="ABC transmembrane type-1"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00441"
SQ   SEQUENCE   278 AA;  31041 MW;  ED566891FE0002C2 CRC64;
     MVTARETRRN GSRPSGLKKW RQKLDGILLP LAGILGFLII WQIFSSSGAT RLPGPLSLFT
     EERTRELLLY PFLDRGGLDK GLFWQTIASL TRVAQGFSIA AIIGISVGIL VGLNRQLNAM
     LDPLFQFLRM IAPLAWVPIA LVAFQQNQPA AIFVIFITAV WPILINTAEG VRQIPQDYNN
     VARVLRMSKS KYLMKVVLPA ALPYIFTGLR IAIGLSWLAI IAAEIVMSGI VGIGFFIWDA
     YQQNYVSDII LAVIYIGAVG LLLDRFVAWL QRWILRNM