ID   PHEB2_SYNPY             Reviewed;         178 AA.
AC   P27647;
DT   01-AUG-1992, integrated into UniProtKB/Swiss-Prot.
DT   01-AUG-1992, sequence version 1.
DT   03-AUG-2022, entry version 88.
DE   RecName: Full=C-phycoerythrin class 2 subunit beta;
DE   AltName: Full=C-phycoerythrin class II beta chain;
GN   Name=mpeB;
OS   Synechococcus sp. (strain WH8020).
OC   Bacteria; Cyanobacteria; Synechococcales; Synechococcaceae; Synechococcus;
OC   unclassified Synechococcus.
OX   NCBI_TaxID=32052;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=8425055; DOI=10.1007/bf00019939;
RA   de Lorimier R., Wilbanks S.M., Glazer A.N.;
RT   "Genes of the R-phycocyanin II locus of marine Synechococcus spp., and
RT   comparison of protein-chromophore interactions in phycocyanins differing in
RT   bilin composition.";
RL   Plant Mol. Biol. 21:225-237(1993).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=1903390; DOI=10.1016/s0021-9258(18)92853-x;
RA   Wilbanks S.M., de Lorimier R., Glazer A.N.;
RT   "Phycoerythrins of marine unicellular cyanobacteria. III. Sequence of a
RT   class II phycoerythrin.";
RL   J. Biol. Chem. 266:9535-9539(1991).
RN   [3]
RP   PARTIAL PROTEIN SEQUENCE, AND CHROMOPHORE BINDING.
RX   PubMed=1903388; DOI=10.1016/s0021-9258(18)92851-6;
RA   Ong L.J., Glazer A.N.;
RT   "Phycoerythrins of marine unicellular cyanobacteria. I. Bilin types and
RT   locations and energy transfer pathways in Synechococcus spp.
RT   phycoerythrins.";
RL   J. Biol. Chem. 266:9515-9527(1991).
CC   -!- FUNCTION: Light-harvesting photosynthetic bile pigment-protein from the
CC       phycobiliprotein complex.
CC   -!- SUBUNIT: Heterodimer of an alpha and a beta chain.
CC   -!- SUBCELLULAR LOCATION: Cellular thylakoid membrane; Peripheral membrane
CC       protein; Cytoplasmic side. Note=Forms the periphery of the
CC       phycobilisome rod.
CC   -!- PTM: Contains two covalently linked phycoerythrobilin chromophores and
CC       one covalently linked phycourobilin chromophore.
CC   -!- SIMILARITY: Belongs to the phycobiliprotein family. {ECO:0000305}.
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DR   EMBL; M95288; AAA27332.1; -; Genomic_DNA.
DR   EMBL; M61118; AAA27319.1; -; Genomic_DNA.
DR   PIR; B40007; B40007.
DR   RefSeq; WP_048347964.1; NZ_CP011941.1.
DR   AlphaFoldDB; P27647; -.
DR   SMR; P27647; -.
DR   STRING; 32052.WB44_13700; -.
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   Pfam; PF00502; Phycobilisome; 1.
DR   PIRSF; PIRSF000081; Phycocyanin; 1.
DR   SUPFAM; SSF46458; SSF46458; 1.
PE   1: Evidence at protein level;
KW   Antenna complex; Bile pigment; Chromophore; Direct protein sequencing;
KW   Electron transport; Membrane; Photosynthesis; Phycobilisome; Thylakoid;
KW   Transport.
FT   CHAIN           1..178
FT                   /note="C-phycoerythrin class 2 subunit beta"
FT                   /id="PRO_0000199204"
FT   BINDING         50
FT                   /ligand="phycourobilin"
FT                   /ligand_id="ChEBI:CHEBI:189062"
FT                   /note="covalent, via 2 links"
FT   BINDING         61
FT                   /ligand="phycourobilin"
FT                   /ligand_id="ChEBI:CHEBI:189062"
FT                   /note="covalent, via 2 links"
FT   BINDING         82
FT                   /ligand="(2R,3E)-phycoerythrobilin"
FT                   /ligand_id="ChEBI:CHEBI:85276"
FT                   /ligand_label="1"
FT                   /note="covalent, via 1 link"
FT   BINDING         159
FT                   /ligand="(2R,3E)-phycoerythrobilin"
FT                   /ligand_id="ChEBI:CHEBI:85276"
FT                   /ligand_label="2"
FT                   /note="covalent, via 1 link"
SQ   SEQUENCE   178 AA;  17949 MW;  C72AB4E396D805AB CRC64;
     MLDAFSRKAV SADSSGAFIG GGELASLKSF IADGNKRLDA VNALSSNAAC IVSDAVAGIC
     CENTGLTAPN GGVYTNRKMA ACLRDGEIVL RYVSYALLAG DASVLQDRCL NGLRETYAAL
     GVPTGSAARA VAIMKAASAA LITNTNSQPK KAAVTQGDCS SLAGEAGSYF DAVISAIS