PHCB2_MICDP
ID PHCB2_MICDP Reviewed; 172 AA.
AC P08039;
DT 01-AUG-1988, integrated into UniProtKB/Swiss-Prot.
DT 01-AUG-1988, sequence version 1.
DT 03-AUG-2022, entry version 98.
DE RecName: Full=C-phycocyanin-2 beta subunit;
GN Name=cpcB2;
OS Microchaete diplosiphon (Fremyella diplosiphon).
OC Bacteria; Cyanobacteria; Nostocales; Rivulariaceae; Microchaete.
OX NCBI_TaxID=1197;
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX PubMed=3126486; DOI=10.1093/nar/16.4.1626;
RA Capuano V., Mazel D., Tandeau de Marsac N., Houmard J.;
RT "Complete nucleotide sequence of the red-light specific set of phycocyanin
RT genes from the cyanobacterium Calothrix PCC 7601.";
RL Nucleic Acids Res. 16:1626-1626(1988).
RN [2]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX PubMed=3127591; DOI=10.1016/0022-2836(88)90617-1;
RA Conley P.B., Lemaux P.G., Grossman A.;
RT "Molecular characterization and evolution of sequences encoding light-
RT harvesting components in the chromatically adapting cyanobacterium
RT Fremyella diplosiphon.";
RL J. Mol. Biol. 199:447-465(1988).
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-2 is expressed in red but not in green light
CC (inducible phycocyanin).
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; X06451; CAA29750.1; -; Genomic_DNA.
DR EMBL; X07012; CAA30061.1; -; Genomic_DNA.
DR EMBL; M36276; AAA23289.1; -; Genomic_DNA.
DR AlphaFoldDB; P08039; -.
DR SMR; P08039; -.
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..172
FT /note="C-phycocyanin-2 beta subunit"
FT /id="PRO_0000199146"
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"
FT CONFLICT 12
FT /note="A -> R (in Ref. 2; CAA30061)"
FT /evidence="ECO:0000305"
FT CONFLICT 29
FT /note="T -> D (in Ref. 2; CAA30061)"
FT /evidence="ECO:0000305"
SQ SEQUENCE 172 AA; 18122 MW; 4E5E874728223507 CRC64;
MLDAFTKVVS QADTRGAYIS DAEIDALKTM VAAGSKRMDV VNRITGNAST IVANAARALF
EEQPQLIAPG GNAYTNRRMA ACLRDMEIIL RYVTYAVFAG DASVLDDRCL NGLRETYQAL
GVPGASVSTG VQKMKEAAIA IANDPSGVTR GDCSSLMSEL GSYFDRAAAA VG
