PHCB3_MICDP
ID PHCB3_MICDP Reviewed; 173 AA.
AC P14877;
DT 01-APR-1990, integrated into UniProtKB/Swiss-Prot.
DT 01-APR-1990, sequence version 1.
DT 03-AUG-2022, entry version 97.
DE RecName: Full=C-phycocyanin-3 beta subunit;
GN Name=cpcB3;
OS Microchaete diplosiphon (Fremyella diplosiphon).
OC Bacteria; Cyanobacteria; Nostocales; Rivulariaceae; Microchaete.
OX NCBI_TaxID=1197;
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RA Mazel D., Houmard J., Tandeau de Marsac N.;
RT "A multigene family in Calothrix sp. PCC 7601 encodes phycocyanin, the
RT major component of the cyanobacterial light harvesting antenna.";
RL Mol. Gen. Genet. 211:296-304(1988).
RN [2]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX PubMed=2506452; DOI=10.1038/341245a0;
RA Mazel D., Marliere P.;
RT "Adaptive eradication of methionine and cysteine from cyanobacterial light-
RT harvesting proteins.";
RL Nature 341:245-248(1989).
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 -!- INDUCTION: Phycocyanin-3 is expressed in red light under conditions of
CC sulfur deprivation.
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; X06083; CAA29459.1; -; Genomic_DNA.
DR AlphaFoldDB; P14877; -.
DR SMR; P14877; -.
DR PRIDE; P14877; -.
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 2: Evidence at transcript level;
KW Antenna complex; Bile pigment; Chromophore; Electron transport; Membrane;
KW Methylation; Photosynthesis; Phycobilisome; Thylakoid; Transport.
FT CHAIN 1..173
FT /note="C-phycocyanin-3 beta subunit"
FT /id="PRO_0000199147"
FT BINDING 83
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 154
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 73
FT /note="N4-methylasparagine"
FT /evidence="ECO:0000250|UniProtKB:P06539"
SQ SEQUENCE 173 AA; 18237 MW; 2C564183D22016B8 CRC64;
MVQDAFSKVV SQADARGEYL SDGQLDALIN LVKEGNKRVD VVNRISSNAS SIVRNAARSL
FAEQPQLIAP GGNAYTSRRA AACVRDLEII LRYVTYAIFA GDASVLDDRA LNGLRETYLA
LGTPGASVAV GIQKLKESSI AIANDPNGIT RGDCSSLIAE VSGYFDRAAA AVA
