ID   PHEB2_PARMW             Reviewed;         178 AA.
AC   P0A318; P37721;
DT   15-MAR-2005, integrated into UniProtKB/Swiss-Prot.
DT   15-MAR-2005, sequence version 1.
DT   03-AUG-2022, entry version 91.
DE   RecName: Full=C-phycoerythrin class 2 subunit beta;
DE   AltName: Full=C-phycoerythrin class II beta chain;
GN   Name=mpeB; OrderedLocusNames=SYNW2008;
OS   Parasynechococcus marenigrum (strain WH8102).
OC   Bacteria; Cyanobacteria; Synechococcales; Prochlorococcaceae;
OC   Parasynechococcus; Parasynechococcus marenigrum.
OX   NCBI_TaxID=84588;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=WH8102;
RX   PubMed=12917641; DOI=10.1038/nature01943;
RA   Palenik B., Brahamsha B., Larimer F.W., Land M.L., Hauser L., Chain P.,
RA   Lamerdin J.E., Regala W., Allen E.E., McCarren J., Paulsen I.T.,
RA   Dufresne A., Partensky F., Webb E.A., Waterbury J.;
RT   "The genome of a motile marine Synechococcus.";
RL   Nature 424:1037-1042(2003).
CC   -!- FUNCTION: Light-harvesting photosynthetic bile pigment-protein from the
CC       phycobiliprotein complex.
CC   -!- SUBUNIT: Heterodimer of an alpha and a beta chain. {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Cellular thylakoid membrane {ECO:0000250};
CC       Peripheral membrane protein {ECO:0000250}; Cytoplasmic side
CC       {ECO:0000250}. Note=Forms the periphery of the phycobilisome rod.
CC       {ECO:0000250}.
CC   -!- PTM: Contains two covalently linked phycoerythrobilin chromophores and
CC       one covalently linked phycourobilin chromophore. {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the phycobiliprotein family. {ECO:0000305}.
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DR   EMBL; BX569694; CAE08523.1; -; Genomic_DNA.
DR   RefSeq; WP_011128866.1; NC_005070.1.
DR   AlphaFoldDB; P0A318; -.
DR   SMR; P0A318; -.
DR   STRING; 84588.SYNW2008; -.
DR   EnsemblBacteria; CAE08523; CAE08523; SYNW2008.
DR   KEGG; syw:SYNW2008; -.
DR   eggNOG; ENOG5031YMC; Bacteria.
DR   HOGENOM; CLU_104219_0_0_3; -.
DR   OMA; GICCENT; -.
DR   OrthoDB; 1300235at2; -.
DR   Proteomes; UP000001422; 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   Pfam; PF00502; Phycobilisome; 1.
DR   PIRSF; PIRSF000081; Phycocyanin; 1.
DR   SUPFAM; SSF46458; SSF46458; 1.
PE   3: Inferred from homology;
KW   Antenna complex; Bile pigment; Chromophore; Electron transport; Membrane;
KW   Photosynthesis; Phycobilisome; Thylakoid; Transport.
FT   CHAIN           1..178
FT                   /note="C-phycoerythrin class 2 subunit beta"
FT                   /id="PRO_0000199205"
FT   BINDING         50
FT                   /ligand="phycourobilin"
FT                   /ligand_id="ChEBI:CHEBI:189062"
FT                   /note="covalent, via 2 links"
FT                   /evidence="ECO:0000250"
FT   BINDING         61
FT                   /ligand="phycourobilin"
FT                   /ligand_id="ChEBI:CHEBI:189062"
FT                   /note="covalent, via 2 links"
FT                   /evidence="ECO:0000250"
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                   /evidence="ECO:0000250"
FT   BINDING         159
FT                   /ligand="(2R,3E)-phycoerythrobilin"
FT                   /ligand_id="ChEBI:CHEBI:85276"
FT                   /ligand_label="2"
FT                   /note="covalent, via 1 link"
FT                   /evidence="ECO:0000250"
SQ   SEQUENCE   178 AA;  18085 MW;  7A8080E5211B82FE CRC64;
     MLDAFSRAAV SADSSGSFIG GGELASLKSF IADGNKRLDA VNAITSNASC IVSDAVAGIC
     CENTGLTAPN GGVYTNRKMA ACLRDGEIVL RYVSYALLAG DASVLQDRCL NGLRETYAAL
     GVPTGSASRA VAIMKAAAGA LITNTNSQPK KMPVTTGDCS NIAGEAASYF DMVISAIS