ID   CSMA_CHLAA              Reviewed;          80 AA.
AC   P09928; A9WBH3; P19266;
DT   01-JUL-1989, integrated into UniProtKB/Swiss-Prot.
DT   23-JAN-2007, sequence version 3.
DT   03-AUG-2022, entry version 99.
DE   RecName: Full=Bacteriochlorophyll c-binding protein;
DE            Short=BChl c-binding;
DE   AltName: Full=5.7 kDa chlorosomal protein;
DE   AltName: Full=Chlorosome protein A;
DE   AltName: Full=Light-harvesting protein B-740;
DE   Flags: Precursor;
GN   Name=cmsA; OrderedLocusNames=Caur_0126;
OS   Chloroflexus aurantiacus (strain ATCC 29366 / DSM 635 / J-10-fl).
OC   Bacteria; Chloroflexi; Chloroflexia; Chloroflexales; Chloroflexineae;
OC   Chloroflexaceae; Chloroflexus.
OX   NCBI_TaxID=324602;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=2376566; DOI=10.1128/jb.172.8.4497-4504.1990;
RA   Theroux S.J., Redlinger T.E., Fuller R.C., Robinson S.J.;
RT   "Gene encoding the 5.7-kilodalton chlorosome protein of Chloroflexus
RT   aurantiacus: regulated message levels and a predicted carboxy-terminal
RT   protein extension.";
RL   J. Bacteriol. 172:4497-4504(1990).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 29366 / DSM 635 / J-10-fl;
RX   PubMed=21714912; DOI=10.1186/1471-2164-12-334;
RA   Tang K.H., Barry K., Chertkov O., Dalin E., Han C.S., Hauser L.J.,
RA   Honchak B.M., Karbach L.E., Land M.L., Lapidus A., Larimer F.W.,
RA   Mikhailova N., Pitluck S., Pierson B.K., Blankenship R.E.;
RT   "Complete genome sequence of the filamentous anoxygenic phototrophic
RT   bacterium Chloroflexus aurantiacus.";
RL   BMC Genomics 12:334-334(2011).
RN   [3]
RP   PROTEIN SEQUENCE OF 2-53.
RA   Wechsler T., Suter F., Fuller R.C., Zuber H.;
RT   "The complete amino acid sequence of the bacteriochlorophyll c binding
RT   polypeptide from chlorosomes of the green photosynthetic bacterium
RT   Chloroflexus aurantiacus.";
RL   FEBS Lett. 181:173-178(1985).
CC   -!- FUNCTION: Component of the photosynthetic apparatus. The light
CC       harvesting B740 complex binds bacteriochlorophyll c.
CC   -!- SUBCELLULAR LOCATION: Chlorosome, chlorosome envelope.
CC   -!- DOMAIN: The C-terminal extension may have a role in proper
CC       incorporation of the BChl c binding protein during chlorosome assembly.
CC   -!- SIMILARITY: Belongs to the BChl C/E-binding protein family.
CC       {ECO:0000305}.
CC   ---------------------------------------------------------------------------
CC   Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC   Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC   ---------------------------------------------------------------------------
DR   EMBL; M33964; AAA23099.1; -; Genomic_DNA.
DR   EMBL; CP000909; ABY33380.1; -; Genomic_DNA.
DR   PIR; B37765; B37765.
DR   RefSeq; WP_012256036.1; NC_010175.1.
DR   RefSeq; YP_001633769.1; NC_010175.1.
DR   AlphaFoldDB; P09928; -.
DR   SMR; P09928; -.
DR   STRING; 324602.Caur_0126; -.
DR   EnsemblBacteria; ABY33380; ABY33380; Caur_0126.
DR   KEGG; cau:Caur_0126; -.
DR   PATRIC; fig|324602.8.peg.144; -.
DR   HOGENOM; CLU_196591_0_0_0; -.
DR   OMA; VFRPKRI; -.
DR   Proteomes; UP000002008; Chromosome.
DR   GO; GO:0033105; C:chlorosome envelope; IEA:UniProtKB-SubCell.
DR   GO; GO:0042314; F:bacteriochlorophyll binding; IEA:UniProtKB-KW.
DR   GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR   GO; GO:0015979; P:photosynthesis; IEA:UniProtKB-KW.
DR   Gene3D; 1.20.5.950; -; 1.
DR   InterPro; IPR001470; Bchl_c-bd.
DR   InterPro; IPR038387; Bchl_C-bd_sf.
DR   Pfam; PF02043; Bac_chlorC; 1.
DR   PIRSF; PIRSF002903; Bac_chlorC_bd; 1.
DR   PRINTS; PR00656; BCHLROPHYLLC.
PE   1: Evidence at protein level;
KW   Bacteriochlorophyll; Chlorophyll; Chlorosome; Chromophore;
KW   Direct protein sequencing; Electron transport; Magnesium; Metal-binding;
KW   Photosynthesis; Reference proteome; Transport.
FT   INIT_MET        1
FT                   /note="Removed"
FT                   /evidence="ECO:0000269|Ref.3"
FT   CHAIN           2..53
FT                   /note="Bacteriochlorophyll c-binding protein"
FT                   /id="PRO_0000002805"
FT   PROPEP          54..80
FT                   /id="PRO_0000002806"
FT   REGION          49..80
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        49..70
FT                   /note="Polar residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   BINDING         25
FT                   /ligand="a bacteriochlorophyll c"
FT                   /ligand_id="ChEBI:CHEBI:60197"
FT                   /ligand_part="Mg"
FT                   /ligand_part_id="ChEBI:CHEBI:25107"
FT                   /note="axial binding residue"
FT                   /evidence="ECO:0000305"
FT   CONFLICT        52
FT                   /note="Missing (in Ref. 3; AA sequence)"
FT                   /evidence="ECO:0000305"
SQ   SEQUENCE   80 AA;  8735 MW;  035DBB930692E42D CRC64;
     MATRGWFSES SAQVAQIGDI MFQGHWQWVS NALQATAAAV DNINRNAYPG VSRSGSGEGA
     FSSSPSNGFR PKRIRSRFNR