ID   PHEB_NOSS1              Reviewed;         172 AA.
AC   P35797;
DT   01-JUN-1994, integrated into UniProtKB/Swiss-Prot.
DT   01-JUN-1994, sequence version 1.
DT   03-AUG-2022, entry version 120.
DE   RecName: Full=Phycoerythrocyanin subunit beta;
GN   Name=pecB; OrderedLocusNames=alr0523;
OS   Nostoc sp. (strain PCC 7120 / SAG 25.82 / UTEX 2576).
OC   Bacteria; Cyanobacteria; Nostocales; Nostocaceae; Nostoc.
OX   NCBI_TaxID=103690;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=1556083; DOI=10.1128/jb.174.8.2640-2647.1992;
RA   Swanson R.V., de Lorimier R., Glazer A.N.;
RT   "Genes encoding the phycobilisome rod substructure are clustered on the
RT   Anabaena chromosome: characterization of the phycoerythrocyanin operon.";
RL   J. Bacteriol. 174:2640-2647(1992).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=PCC 7120 / SAG 25.82 / UTEX 2576;
RX   PubMed=11759840; DOI=10.1093/dnares/8.5.205;
RA   Kaneko T., Nakamura Y., Wolk C.P., Kuritz T., Sasamoto S., Watanabe A.,
RA   Iriguchi M., Ishikawa A., Kawashima K., Kimura T., Kishida Y., Kohara M.,
RA   Matsumoto M., Matsuno A., Muraki A., Nakazaki N., Shimpo S., Sugimoto M.,
RA   Takazawa M., Yamada M., Yasuda M., Tabata S.;
RT   "Complete genomic sequence of the filamentous nitrogen-fixing
RT   cyanobacterium Anabaena sp. strain PCC 7120.";
RL   DNA Res. 8:205-213(2001).
RN   [3]
RP   CHROMOPHORE STRUCTURE, AND CHROMOPHORE BINDING AT CYS-82 AND CYS-153.
RA   Bishop J.E., Rapoport H., Klotz A.V., Chan C.F., Glazer A.N.,
RA   Fueglistaller P., Zuber H.;
RT   "Chromopeptides from phycoerythrocyanin. Structure and linkage of the three
RT   bilin groups.";
RL   J. Am. Chem. Soc. 109:875-881(1987).
RN   [4]
RP   CHROMOPHORE ATTACHMENT.
RC   STRAIN=PCC 7120 / SAG 25.82 / UTEX 2576;
RX   PubMed=16452471; DOI=10.1074/jbc.m513796200;
RA   Zhao K.H., Su P., Li J., Tu J.M., Zhou M., Bubenzer C., Scheer H.;
RT   "Chromophore attachment to phycobiliprotein beta-subunits:
RT   phycocyanobilin:cysteine-beta84 phycobiliprotein lyase activity of CpeS-
RT   like protein from Anabaena Sp. PCC7120.";
RL   J. Biol. Chem. 281:8573-8581(2006).
CC   -!- FUNCTION: Light-harvesting photosynthetic bile pigment-protein from the
CC       phycobiliprotein complex.
CC   -!- BIOPHYSICOCHEMICAL PROPERTIES:
CC       Absorption:
CC         Abs(max)=~550 nm;
CC   -!- SUBUNIT: Heterodimer of an alpha and a beta subunit. {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 bilin chromophores.
CC   -!- SIMILARITY: Belongs to the phycobiliprotein family. {ECO:0000305}.
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DR   EMBL; AF178757; AAA22016.1; -; Genomic_DNA.
DR   EMBL; BA000019; BAB72481.1; -; Genomic_DNA.
DR   PIR; A41841; A41841.
DR   PIR; AB1872; AB1872.
DR   RefSeq; WP_010994699.1; NZ_RSCN01000024.1.
DR   AlphaFoldDB; P35797; -.
DR   SMR; P35797; -.
DR   STRING; 103690.17129868; -.
DR   EnsemblBacteria; BAB72481; BAB72481; BAB72481.
DR   KEGG; ana:alr0523; -.
DR   eggNOG; ENOG502Z919; Bacteria.
DR   OMA; NQAACIR; -.
DR   OrthoDB; 1307812at2; -.
DR   Proteomes; UP000002483; 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   1: Evidence at protein level;
KW   Antenna complex; Bile pigment; Chromophore; Electron transport; Membrane;
KW   Photosynthesis; Phycobilisome; Reference proteome; Thylakoid; Transport.
FT   CHAIN           1..172
FT                   /note="Phycoerythrocyanin subunit beta"
FT                   /id="PRO_0000199170"
FT   BINDING         82
FT                   /ligand="(2R,3E)-phycocyanobilin"
FT                   /ligand_id="ChEBI:CHEBI:85275"
FT                   /note="covalent, via 1 link"
FT   BINDING         153
FT                   /ligand="(2R,3E)-phycocyanobilin"
FT                   /ligand_id="ChEBI:CHEBI:85275"
FT                   /note="covalent, via 1 link"
SQ   SEQUENCE   172 AA;  18284 MW;  871E54DBA40F3DFC CRC64;
     MLDAFSKVVE QADRKGNYLS GDEINALSAL VADSNKRLDI VNRLTSNASS IVANAYRALV
     AERPQIFNAG GACFHNRNQA ACIRDLGFIL RYVTYSVLAG DGSVMDDRCL NGLRETYQAL
     GTPGDAVASG IQKMKDAAIA IANDSKGITK GDCSQLIAEL ASYFDRAASA VV