PHCB2_PSETP
ID PHCB2_PSETP Reviewed; 172 AA.
AC Q52451;
DT 01-NOV-1997, integrated into UniProtKB/Swiss-Prot.
DT 01-NOV-1997, sequence version 1.
DT 03-AUG-2022, entry version 80.
DE RecName: Full=C-phycocyanin-2 beta subunit;
GN Name=cpcB2;
OS Pseudanabaena tenuis (strain PCC 7409).
OC Bacteria; Cyanobacteria; Pseudanabaenales; Pseudanabaenaceae;
OC Pseudanabaena.
OX NCBI_TaxID=29415;
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RA Dubbs J.M., Bryant D.A.;
RT "Organization and transcription of the genes encoding two differentially
RT expressed phycocyanins in the cyanobacterium Pseudanabaena sp. PCC 7409.";
RL Submitted (AUG-1992) 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; M99427; AAA26043.1; -; Genomic_DNA.
DR AlphaFoldDB; Q52451; -.
DR SMR; Q52451; -.
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; Thylakoid; Transport.
FT CHAIN 1..172
FT /note="C-phycocyanin-2 beta subunit"
FT /id="PRO_0000199153"
FT BINDING 82
FT /ligand="(2R,3E)-phycocyanobilin"
FT /ligand_id="ChEBI:CHEBI:85275"
FT /ligand_label="1"
FT /note="covalent, via 1 link"
FT /evidence="ECO:0000250|UniProtKB:P06539"
FT BINDING 153
FT /ligand="(2R,3E)-phycocyanobilin"
FT /ligand_id="ChEBI:CHEBI:85275"
FT /ligand_label="2"
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; 18114 MW; C1929DCA5C3E7A74 CRC64;
MLDAFTKVVA QADTRGRFVS DSQIDALKQL VADGTKRLDV VNRITASSSS IVTDAARALF
EDQPQLIAPG GNAYTNRRIA ACMRDMDIIL RYVTYAVFSG DASVLEDRCL NGLRETYSAL
GVPGGSVAVG IDKMKAAAIA LANDPNGVTR GDCSALMSEL ASYFDKAAAA VG