ID   PCBG_PROMT              Reviewed;         354 AA.
AC   Q46JW4;
DT   24-JAN-2006, integrated into UniProtKB/Swiss-Prot.
DT   13-SEP-2005, sequence version 1.
DT   03-AUG-2022, entry version 82.
DE   RecName: Full=Divinyl chlorophyll a/b light-harvesting protein PcbG;
GN   Name=pcbG; OrderedLocusNames=PMN2A_0723;
OS   Prochlorococcus marinus (strain NATL2A).
OC   Bacteria; Cyanobacteria; Synechococcales; Prochlorococcaceae;
OC   Prochlorococcus.
OX   NCBI_TaxID=59920;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=NATL2A;
RX   PubMed=18159947; DOI=10.1371/journal.pgen.0030231;
RA   Kettler G.C., Martiny A.C., Huang K., Zucker J., Coleman M.L., Rodrigue S.,
RA   Chen F., Lapidus A., Ferriera S., Johnson J., Steglich C., Church G.M.,
RA   Richardson P., Chisholm S.W.;
RT   "Patterns and implications of gene gain and loss in the evolution of
RT   Prochlorococcus.";
RL   PLoS Genet. 3:2515-2528(2007).
CC   -!- FUNCTION: The antenna complex functions as a light receptor, it
CC       captures and delivers excitation energy to photosystems II and I. The
CC       Prochlorales pcb genes are not related to higher plant LHCs.
CC       {ECO:0000250|UniProtKB:Q6Q972}.
CC   -!- COFACTOR:
CC       Name=divinyl chlorophyll a; Xref=ChEBI:CHEBI:73095;
CC         Evidence={ECO:0000250|UniProtKB:Q6Q972};
CC   -!- COFACTOR:
CC       Name=divinyl chlorophyll b; Xref=ChEBI:CHEBI:73096;
CC         Evidence={ECO:0000250|UniProtKB:Q6Q972};
CC   -!- SUBUNIT: The antenna complex consists of divinyl chlorophylls (a and b)
CC       and divinyl chlorophyll a/b binding proteins and binds more divinyl
CC       chlorophyll b than does the antenna complex from high-light-adapted
CC       Prochlorococcus. {ECO:0000250|UniProtKB:Q6Q972}.
CC   -!- SUBCELLULAR LOCATION: Cellular thylakoid membrane
CC       {ECO:0000250|UniProtKB:Q6Q972}; Multi-pass membrane protein
CC       {ECO:0000250}.
CC   -!- MISCELLANEOUS: This low-light-adapted strain contains 7 pcb genes.
CC       {ECO:0000303|PubMed:18159947}.
CC   -!- SIMILARITY: Belongs to the PsbB/PsbC family. IsiA/Pcb subfamily.
CC       {ECO:0000305}.
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DR   EMBL; CP000095; AAZ58214.1; -; Genomic_DNA.
DR   RefSeq; WP_011294812.1; NC_007335.2.
DR   AlphaFoldDB; Q46JW4; -.
DR   SMR; Q46JW4; -.
DR   STRING; 59920.PMN2A_0723; -.
DR   EnsemblBacteria; AAZ58214; AAZ58214; PMN2A_0723.
DR   KEGG; pmn:PMN2A_0723; -.
DR   HOGENOM; CLU_028310_0_0_3; -.
DR   OMA; FGYNWED; -.
DR   OrthoDB; 417558at2; -.
DR   PhylomeDB; Q46JW4; -.
DR   Proteomes; UP000002535; Chromosome.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   GO; GO:0009522; C:photosystem I; IEA:UniProtKB-KW.
DR   GO; GO:0009523; C:photosystem II; IEA:UniProtKB-KW.
DR   GO; GO:0031676; C:plasma membrane-derived thylakoid membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0016168; F:chlorophyll binding; IEA:UniProtKB-KW.
DR   GO; GO:0009767; P:photosynthetic electron transport chain; IEA:InterPro.
DR   InterPro; IPR000932; PS_antenna-like.
DR   InterPro; IPR036001; PS_II_antenna-like_sf.
DR   PANTHER; PTHR33180; PTHR33180; 1.
DR   Pfam; PF00421; PSII; 1.
DR   SUPFAM; SSF161077; SSF161077; 1.
PE   3: Inferred from homology;
KW   Chlorophyll; Chromophore; Membrane; Photosynthesis; Photosystem I;
KW   Photosystem II; Reference proteome; Thylakoid; Transmembrane;
KW   Transmembrane helix.
FT   CHAIN           1..354
FT                   /note="Divinyl chlorophyll a/b light-harvesting protein
FT                   PcbG"
FT                   /id="PRO_0000077555"
FT   TRANSMEM        27..47
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        65..85
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        88..108
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        201..221
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        241..261
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        308..328
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   354 AA;  38399 MW;  6D813A84714A302E CRC64;
     MQTYGNPDVT YGWWAGNSRV TNRAGKFIAA HAGHTGLISF AAGASTLWEL ARFDPSIAMG
     HQSSIFLAHL ASIGIGFDDA GVWTGANVAS VAIVHIIASL VYAGGALSHS LLFDGDLADG
     PGPTTQKFKL EWDNPDNLTF ILGHHLIFFG VACIAFVEWA RIHGIYDPAI GAVRQVEYNL
     NLTNIWNHQF DFLAIDNLED VLGGHAFLAF VEITGGAFHI ATKQVGEYTE FKGAGILSAE
     AVLSFSLAGI GWMAIVAAFW CATNTTVYPE PWFGEPLALK FGISPYWIDT VEVSESTALA
     GHTTRAALTN VHYYFGFFFL QGHLWHAIRA LGFDFRRVTN AVAGLDRAQI TLND