PHEB_PORSO
ID PHEB_PORSO Reviewed; 177 AA.
AC P29948;
DT 01-APR-1993, integrated into UniProtKB/Swiss-Prot.
DT 01-APR-1993, sequence version 1.
DT 03-AUG-2022, entry version 86.
DE RecName: Full=B-phycoerythrin beta chain;
GN Name=cpeB;
OS Porphyridium sordidum (Red alga).
OG Plastid; Chloroplast.
OC Eukaryota; Rhodophyta; Bangiophyceae; Porphyridiales; Porphyridiaceae;
OC Porphyridium.
OX NCBI_TaxID=28024;
RN [1]
RP X-RAY CRYSTALLOGRAPHY (2.2 ANGSTROMS), METHYLATION AT ASN-72, AND PARTIAL
RP PROTEIN SEQUENCE.
RX PubMed=1469725; DOI=10.1016/0022-2836(92)90876-l;
RA Ficner R., Lobeck K., Schmidt G., Huber R.;
RT "Isolation, crystallization, crystal structure analysis and refinement of
RT B-phycoerythrin from the red alga Porphyridium sordidum at 2.2-A
RT resolution.";
RL J. Mol. Biol. 228:935-950(1992).
CC -!- FUNCTION: Light-harvesting photosynthetic bile pigment-protein from the
CC phycobiliprotein complex.
CC -!- SUBUNIT: Heteromer of 6 alpha, 6 beta and one gamma chain.
CC -!- SUBCELLULAR LOCATION: Plastid, chloroplast thylakoid membrane
CC {ECO:0000250}; Peripheral membrane protein {ECO:0000250}; Stromal side
CC {ECO:0000250}. Note=Forms the periphery of the phycobilisome rod.
CC {ECO:0000250}.
CC -!- PTM: Contains two covalently linked phycoerythrobilin chromophores and
CC one covalently linked phycourobilin chromophore. {ECO:0000250}.
CC -!- SIMILARITY: Belongs to the phycobiliprotein family. {ECO:0000305}.
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DR PIR; S27327; S27327.
DR AlphaFoldDB; P29948; -.
DR SMR; P29948; -.
DR iPTMnet; P29948; -.
DR GO; GO:0009535; C:chloroplast thylakoid membrane; IEA:UniProtKB-SubCell.
DR GO; GO:0030089; C:phycobilisome; IEA:UniProtKB-KW.
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; Chloroplast; Chromophore;
KW Direct protein sequencing; Electron transport; Membrane; Methylation;
KW Photosynthesis; Phycobilisome; Plastid; Thylakoid; Transport.
FT CHAIN 1..177
FT /note="B-phycoerythrin beta chain"
FT /id="PRO_0000199196"
FT BINDING 50
FT /ligand="phycourobilin"
FT /ligand_id="ChEBI:CHEBI:189062"
FT /note="covalent, via 2 links"
FT /evidence="ECO:0000250"
FT BINDING 61
FT /ligand="phycourobilin"
FT /ligand_id="ChEBI:CHEBI:189062"
FT /note="covalent, via 2 links"
FT /evidence="ECO:0000250"
FT BINDING 82
FT /ligand="(2R,3E)-phycoerythrobilin"
FT /ligand_id="ChEBI:CHEBI:85276"
FT /ligand_label="1"
FT /note="covalent, via 1 link"
FT BINDING 158
FT /ligand="(2R,3E)-phycoerythrobilin"
FT /ligand_id="ChEBI:CHEBI:85276"
FT /ligand_label="2"
FT /note="covalent, via 1 link"
FT MOD_RES 72
FT /note="N4-methylasparagine"
FT /evidence="ECO:0000269|PubMed:1469725"
SQ SEQUENCE 177 AA; 18554 MW; A1BCAAC1E6F3C325 CRC64;
MLDAFSRVVV NSDAKAAYVG GSDLQALKSF IADGNKRLDS VNAIVSNASC MVSDAVSGMI
CENPGLISPG GNCYTNRRMA ACLRDGEIIL RYVSYALLAG DASVLEDRCL NGLKETYIAL
GVPTNSSIRA VSIMKAQAVA FITNTATERK MSFAAGDCTS LASEVASYFD RVGAAIS