ID   BCPA_CHLTI              Reviewed;         354 AA.
AC   Q46135;
DT   15-JUL-1998, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1996, sequence version 1.
DT   03-AUG-2022, entry version 65.
DE   RecName: Full=Bacteriochlorophyll a protein;
DE            Short=BCP;
DE            Short=BChl a protein;
DE   AltName: Full=Fenna-Matthews-Olson protein;
DE            Short=FMO protein;
DE   Flags: Fragment;
GN   Name=fmoA;
OS   Chlorobaculum thiosulfatiphilum (Chlorobium limicola f.sp.
OS   thiosulfatophilum).
OC   Bacteria; Chlorobi; Chlorobia; Chlorobiales; Chlorobiaceae; Chlorobaculum.
OX   NCBI_TaxID=115852;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=7626630; DOI=10.1021/bi00029a039;
RA   Hager-Braun C., Xie D.L., Jarosch U., Herold E., Buttner M., Zimmermann R.,
RA   Deutzmann R., Hauska G., Nelson N.;
RT   "Stable photobleaching of P840 in Chlorobium reaction center preparations:
RT   presence of the 42-kDa bacteriochlorophyll a protein and a 17-kDa
RT   polypeptide.";
RL   Biochemistry 34:9617-9624(1995).
CC   -!- FUNCTION: Intermediary in the transfer of excitation energy from the
CC       chlorophyll to the reaction centers.
CC   -!- SUBUNIT: Homotrimer. Each subunit contains 7 molecules of
CC       bacteriochlorophyll a.
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DR   EMBL; X83529; CAA58510.1; -; Genomic_DNA.
DR   PIR; S51143; S51143.
DR   AlphaFoldDB; Q46135; -.
DR   SMR; Q46135; -.
DR   PRIDE; Q46135; -.
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; 2.50.10.10; -; 1.
DR   InterPro; IPR003426; BChl_A.
DR   InterPro; IPR036559; Chl_A_sf.
DR   Pfam; PF02327; BChl_A; 1.
DR   SUPFAM; SSF51081; SSF51081; 1.
PE   4: Predicted;
KW   Bacteriochlorophyll; Chlorophyll; Chromophore; Electron transport;
KW   Magnesium; Metal-binding; Photosynthesis; Reaction center; Transport.
FT   CHAIN           <1..354
FT                   /note="Bacteriochlorophyll a protein"
FT                   /id="PRO_0000064891"
FT   BINDING         99
FT                   /ligand="bacteriochlorophyll a"
FT                   /ligand_id="ChEBI:CHEBI:61720"
FT                   /ligand_label="1"
FT                   /ligand_part="Mg"
FT                   /ligand_part_id="ChEBI:CHEBI:25107"
FT                   /note="axial binding residue"
FT                   /evidence="ECO:0000250"
FT   BINDING         134
FT                   /ligand="bacteriochlorophyll a"
FT                   /ligand_id="ChEBI:CHEBI:61720"
FT                   /ligand_label="6"
FT                   /ligand_part="Mg"
FT                   /ligand_part_id="ChEBI:CHEBI:25107"
FT                   /note="axial binding residue"
FT                   /evidence="ECO:0000250"
FT   BINDING         278
FT                   /ligand="bacteriochlorophyll a"
FT                   /ligand_id="ChEBI:CHEBI:61720"
FT                   /ligand_label="4"
FT                   /ligand_part="Mg"
FT                   /ligand_part_id="ChEBI:CHEBI:25107"
FT                   /note="axial binding residue"
FT                   /evidence="ECO:0000250"
FT   BINDING         285
FT                   /ligand="bacteriochlorophyll a"
FT                   /ligand_id="ChEBI:CHEBI:61720"
FT                   /ligand_label="7"
FT                   /ligand_part="Mg"
FT                   /ligand_part_id="ChEBI:CHEBI:25107"
FT                   /note="axial binding residue"
FT                   /evidence="ECO:0000250"
FT   BINDING         286
FT                   /ligand="bacteriochlorophyll a"
FT                   /ligand_id="ChEBI:CHEBI:61720"
FT                   /ligand_label="3"
FT                   /ligand_part="Mg"
FT                   /ligand_part_id="ChEBI:CHEBI:25107"
FT                   /note="axial binding residue"
FT                   /evidence="ECO:0000250"
FT   NON_TER         1
SQ   SEQUENCE   354 AA;  39243 MW;  F4D4D565BDDCDB1B CRC64;
     HRDYEIVLEG GSSSWGKVKA RAKVNVPPAS PLLPADCNVK LNVKPLDPAK GFVRISAVFE
     SIVDSTKNKL TIEADIANET KERRISVGEG MVSVGGFSHS FSFEGSVVNM FYYRSDAVRR
     NVPNPIYRQG RQFHDILMKV PLDNNDLIDT WEGTVRAIGS TGTFNDWIRD FWFIGPAFTA
     LNEGGQRISR IEVNGLNTES GPKGPVGVSR WRFSHGGSGM VDSISRWAEL FPFDKLNRPA
     QVEAGFRSDS QGIEVKVDGE FPGVSVDAGG GLRRILNHPL IPLVHHGMVG KFNNFNVDAQ
     LKVVLPKGYK VRYAAPQYRS QNLEEYRWSG GAYARWVEHV CKGGVGQFEV LYAQ