ID   CSMB_PROVB              Reviewed;          75 AA.
AC   Q46473;
DT   29-AUG-2001, integrated into UniProtKB/Swiss-Prot.
DT   23-JAN-2007, sequence version 3.
DT   03-AUG-2022, entry version 51.
DE   RecName: Full=Chlorosome envelope protein B;
DE   AltName: Full=Chlorosome 7.5 kDa protein;
DE   AltName: Full=Gerola-Olson chlorosome protein;
GN   Name=csmB;
OS   Prosthecochloris vibrioformis (Chlorobium vibrioforme).
OC   Bacteria; Chlorobi; Chlorobia; Chlorobiales; Chlorobiaceae;
OC   Prosthecochloris.
OX   NCBI_TaxID=1098;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   STRAIN=8327D;
RA   Chung S., Frank G., Zuber H., Bryant D.A.;
RT   "Genes encoding two chlorosome components from the green sulfur bacteria
RT   Chlorobium vibrioforme strain 8327D and Chlorobium tepidum.";
RL   Photosyn. Res. 41:261-275(1994).
RN   [2]
RP   CHARACTERIZATION.
RC   STRAIN=8327D;
RX   PubMed=8824146; DOI=10.1007/s002030050379;
RA   Chung S., Bryant D.A.;
RT   "Characterization of csmB genes, encoding a 7.5-kDa protein of the
RT   chlorosome envelope, from the green sulfur bacteria Chlorobium vibrioforme
RT   8327D and Chlorobium tepidum.";
RL   Arch. Microbiol. 166:234-244(1996).
CC   -!- FUNCTION: Component of the photosynthetic apparatus which may bind the
CC       chlorosome to the bacteriochlorophyll a protein monolayer.
CC   -!- SUBCELLULAR LOCATION: Chlorosome, chlorosome envelope.
CC   -!- SIMILARITY: Belongs to the CsmB/CsmF family. {ECO:0000305}.
CC   -!- SEQUENCE CAUTION:
CC       Sequence=AAB02565.1; Type=Erroneous initiation; Evidence={ECO:0000305};
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DR   EMBL; U58359; AAB02565.1; ALT_INIT; Genomic_DNA.
DR   AlphaFoldDB; Q46473; -.
DR   SMR; Q46473; -.
DR   GO; GO:0033105; C:chlorosome envelope; IEA:UniProtKB-SubCell.
DR   GO; GO:0042314; F:bacteriochlorophyll binding; IEA:UniProtKB-KW.
DR   GO; GO:0015979; P:photosynthesis; IEA:UniProtKB-KW.
PE   1: Evidence at protein level;
KW   Bacteriochlorophyll; Chlorophyll; Chlorosome; Chromophore; Photosynthesis;
KW   Repeat.
FT   INIT_MET        1
FT                   /note="Removed"
FT                   /evidence="ECO:0000250"
FT   CHAIN           2..75
FT                   /note="Chlorosome envelope protein B"
FT                   /id="PRO_0000192639"
FT   REPEAT          8..17
FT                   /note="1"
FT   REPEAT          29..39
FT                   /note="2"
FT   REPEAT          40..50
FT                   /note="3"
FT   REPEAT          51..61
FT                   /note="4"
FT   REGION          8..61
FT                   /note="4 X approximate repeats"
SQ   SEQUENCE   75 AA;  7736 MW;  79B10D25FAF76964 CRC64;
     MSNGTNIDVA GAINTLTETF GKLFQMQVDV ANNSLKALAE VAEPLGKTAT DLVASFANVA
     TQVLQNVSSA VAPKK