ID   PHCB_SYNPW              Reviewed;         172 AA.
AC   P27289; A5GIZ1;
DT   01-AUG-1992, integrated into UniProtKB/Swiss-Prot.
DT   23-JAN-2007, sequence version 3.
DT   03-AUG-2022, entry version 119.
DE   RecName: Full=R-phycocyanin beta subunit;
GN   Name=rpcB; Synonyms=cpcB; OrderedLocusNames=SynWH7803_0480;
OS   Synechococcus sp. (strain WH7803).
OC   Bacteria; Cyanobacteria; Synechococcales; Synechococcaceae; Synechococcus;
OC   unclassified Synechococcus.
OX   NCBI_TaxID=32051;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=1912508; DOI=10.1007/bf00037076;
RA   Wilson W.H., Newman J., Mann N.H., Carr N.G.;
RT   "Cloning and sequence analysis of the phycocyanin genes of the marine
RT   cyanobacterium Synechococcus sp. WH7803.";
RL   Plant Mol. Biol. 17:931-933(1991).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=WH7803;
RG   Genoscope;
RL   Submitted (MAY-2006) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Light-harvesting photosynthetic bile pigment-protein from the
CC       phycobiliprotein complex (phycobilisome, PBS). Phycocyanin is the major
CC       phycobiliprotein in the PBS rod.
CC   -!- SUBUNIT: Heterodimer of an alpha and a beta subunit, which further
CC       assembles into trimers and the trimers into hexamers.
CC       {ECO:0000250|UniProtKB:P06539}.
CC   -!- SUBCELLULAR LOCATION: Cellular thylakoid membrane {ECO:0000250};
CC       Peripheral membrane protein {ECO:0000250}; Cytoplasmic side
CC       {ECO:0000250}. Note=Part of the phycobilisome rod. {ECO:0000250}.
CC   -!- PTM: Contains two covalently linked bilin chromophores. {ECO:0000250,
CC       ECO:0000250|UniProtKB:P06539}.
CC   -!- SIMILARITY: Belongs to the phycobiliprotein family. {ECO:0000305}.
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DR   EMBL; X59809; CAA42479.1; -; Genomic_DNA.
DR   EMBL; CT971583; CAK22906.1; -; Genomic_DNA.
DR   PIR; S17734; CFYCB3.
DR   RefSeq; WP_011932394.1; NC_009481.1.
DR   AlphaFoldDB; P27289; -.
DR   SMR; P27289; -.
DR   STRING; 32051.SynWH7803_0480; -.
DR   PRIDE; P27289; -.
DR   EnsemblBacteria; CAK22906; CAK22906; SynWH7803_0480.
DR   KEGG; syx:SynWH7803_0480; -.
DR   eggNOG; ENOG502Z7NE; Bacteria.
DR   HOGENOM; CLU_104219_0_0_3; -.
DR   OMA; GITPGDC; -.
DR   OrthoDB; 1307812at2; -.
DR   Proteomes; UP000001566; Chromosome.
DR   GO; GO:0030089; C:phycobilisome; IEA:UniProtKB-KW.
DR   GO; GO:0031676; C:plasma membrane-derived thylakoid membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0015979; P:photosynthesis; IEA:UniProtKB-KW.
DR   Gene3D; 1.10.490.20; -; 1.
DR   InterPro; IPR009050; Globin-like_sf.
DR   InterPro; IPR012128; Phycobilisome_asu/bsu.
DR   InterPro; IPR038719; Phycobilisome_asu/bsu_sf.
DR   InterPro; IPR006247; Phycocyanin_b.
DR   Pfam; PF00502; Phycobilisome; 1.
DR   PIRSF; PIRSF000081; Phycocyanin; 1.
DR   SUPFAM; SSF46458; SSF46458; 1.
DR   TIGRFAMs; TIGR01339; phycocy_beta; 1.
PE   3: Inferred from homology;
KW   Antenna complex; Bile pigment; Chromophore; Electron transport; Membrane;
KW   Methylation; Photosynthesis; Phycobilisome; Reference proteome; Thylakoid;
KW   Transport.
FT   INIT_MET        1
FT                   /note="Removed"
FT                   /evidence="ECO:0000250"
FT   CHAIN           2..172
FT                   /note="R-phycocyanin beta subunit"
FT                   /id="PRO_0000199164"
FT   BINDING         82
FT                   /ligand="(2R,3E)-phycocyanobilin"
FT                   /ligand_id="ChEBI:CHEBI:85275"
FT                   /note="covalent, via 1 link"
FT                   /evidence="ECO:0000250|UniProtKB:P06539"
FT   BINDING         153
FT                   /ligand="(2R,3E)-phycoerythrobilin"
FT                   /ligand_id="ChEBI:CHEBI:85276"
FT                   /note="covalent, via 1 link"
FT                   /evidence="ECO:0000250|UniProtKB:P06539"
FT   MOD_RES         72
FT                   /note="N4-methylasparagine"
FT                   /evidence="ECO:0000250|UniProtKB:P06539"
SQ   SEQUENCE   172 AA;  17909 MW;  0C99C11E77A13739 CRC64;
     MFDAFTKVVA QADARGQFIS ASEIDALAAM VSDSNKRLDA VNRISSNAST IVASAARQLF
     AQQPSLIAPG GNAYTSRRMA ACLRDMEIIL RYVTYASFAG DASVLEDRCL NGLRETYLAL
     GTPGASVAAG VNLMKESALA IVNDRAGISA GDCASLSSEI GTYFDRAAAA VA