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APCB_SYNY4
ID   APCB_SYNY4              Reviewed;         161 AA.
AC   Q02924;
DT   01-JUL-1993, integrated into UniProtKB/Swiss-Prot.
DT   01-JUL-1993, sequence version 1.
DT   03-AUG-2022, entry version 91.
DE   RecName: Full=Allophycocyanin beta chain;
GN   Name=apcB;
OS   Synechocystis sp. (strain PCC 6714) (Aphanocapsa sp. (strain PCC 6714)).
OC   Bacteria; Cyanobacteria; Synechococcales; Merismopediaceae; Synechocystis;
OC   unclassified Synechocystis.
OX   NCBI_TaxID=1147;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=8467079; DOI=10.1007/bf00027115;
RA   Dimagno L.M., Haselkorn R.;
RT   "Isolation and characterization of the genes encoding allophycocyanin
RT   subunits and two linker proteins from Synechocystis 6714.";
RL   Plant Mol. Biol. 21:835-846(1993).
CC   -!- FUNCTION: Light-harvesting photosynthetic bile pigment-protein from the
CC       phycobiliprotein complex. Allophycocyanin has a maximum absorption at
CC       approximately 650 nanometers.
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 core of the phycobilisome. {ECO:0000250}.
CC   -!- PTM: Contains one covalently linked phycocyanobilin chromophore.
CC       {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the phycobiliprotein family. {ECO:0000305}.
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DR   EMBL; L02308; AAA69683.1; -; Genomic_DNA.
DR   PIR; S33624; S33624.
DR   RefSeq; WP_028948243.1; NZ_CP007542.1.
DR   AlphaFoldDB; Q02924; -.
DR   SMR; Q02924; -.
DR   STRING; 1147.D082_33980; -.
DR   eggNOG; ENOG502Z7X0; Bacteria.
DR   OrthoDB; 1494063at2; -.
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   CDD; cd12126; APC_beta; 1.
DR   Gene3D; 1.10.490.20; -; 1.
DR   InterPro; IPR006245; ApcB.
DR   InterPro; IPR009050; Globin-like_sf.
DR   InterPro; IPR012128; Phycobilisome_asu/bsu.
DR   InterPro; IPR038719; Phycobilisome_asu/bsu_sf.
DR   PANTHER; PTHR34011:SF3; PTHR34011:SF3; 1.
DR   Pfam; PF00502; Phycobilisome; 1.
DR   PIRSF; PIRSF000081; Phycocyanin; 1.
DR   SUPFAM; SSF46458; SSF46458; 1.
DR   TIGRFAMs; TIGR01337; apcB; 1.
PE   3: Inferred from homology;
KW   Antenna complex; Bile pigment; Chromophore; Electron transport; Membrane;
KW   Methylation; Photosynthesis; Phycobilisome; Thylakoid; Transport.
FT   CHAIN           1..161
FT                   /note="Allophycocyanin beta chain"
FT                   /id="PRO_0000199106"
FT   BINDING         81
FT                   /ligand="(2R,3E)-phycocyanobilin"
FT                   /ligand_id="ChEBI:CHEBI:85275"
FT                   /note="covalent, via 1 link"
FT                   /evidence="ECO:0000250"
FT   MOD_RES         71
FT                   /note="N4-methylasparagine"
FT                   /evidence="ECO:0000250"
SQ   SEQUENCE   161 AA;  17243 MW;  63F0047008630A73 CRC64;
     MQDAITAVIN SADVQGKYLD GAAMDKLKNY FASGELRVRA ASVISANAAT IVKEAVAKSL
     LYSDVTRPGG NMYTTRRYAA CIRDLDYYLR YATYAMLAGD ASILDERVLN GLKETYNSLG
     VPISSTVQAI QAIKEVTASL VGADAGKEMG VYLDYICSGL S
 
 
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