PHEB_POLHB
ID PHEB_POLHB Reviewed; 177 AA.
AC Q01922;
DT 01-APR-1993, integrated into UniProtKB/Swiss-Prot.
DT 01-APR-1993, sequence version 1.
DT 03-AUG-2022, entry version 96.
DE RecName: Full=R-phycoerythrin beta chain;
GN Name=cpeB; Synonyms=rpeB;
OS Polysiphonia hemisphaerica var. boldii (Red alga) (Polysiphonia boldii).
OG Plastid; Chloroplast.
OC Eukaryota; Rhodophyta; Florideophyceae; Rhodymeniophycidae; Ceramiales;
OC Rhodomelaceae; Polysiphonioideae; Polysiphonia.
OX NCBI_TaxID=2805;
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX PubMed=8425050; DOI=10.1007/bf00039617;
RA Roell M.K., Morse D.E.;
RT "Organization, expression and nucleotide sequence of the operon encoding R-
RT phycoerythrin alpha and beta subunits from the red alga Polysiphonia
RT boldii.";
RL Plant Mol. Biol. 21:47-58(1993).
CC -!- FUNCTION: Light-harvesting photosynthetic bile pigment-protein from the
CC phycobiliprotein complex.
CC -!- BIOPHYSICOCHEMICAL PROPERTIES:
CC Absorption:
CC Abs(max)=566 nm;
CC Note=Exhibits two smaller absorbance peaks at 544 nm and 495 nm.;
CC -!- SUBUNIT: Heterodimer of an alpha and a beta 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 EMBL; Z14094; CAA78477.1; -; Genomic_DNA.
DR PIR; S30932; S30932.
DR AlphaFoldDB; Q01922; -.
DR SMR; Q01922; -.
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 Electron transport; Membrane; Methylation; Photosynthesis; Phycobilisome;
KW Plastid; Thylakoid; Transport.
FT CHAIN 1..177
FT /note="R-phycoerythrin beta chain"
FT /id="PRO_0000199193"
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 /evidence="ECO:0000250"
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 /evidence="ECO:0000250"
FT MOD_RES 72
FT /note="N4-methylasparagine"
FT /evidence="ECO:0000250"
SQ SEQUENCE 177 AA; 18721 MW; ED12A5B38C4A7D06 CRC64;
MLDAFSRVVV NSDSKAAYVS GSDLQALKTF INDGNKRLDA VNYIVSNSSC IVSDAISGMI
CENPGLITPG GNCYTNRRMA ACLRDGEIIL RYVSYALLAG DASVLEDRCL NGLKETYIAL
GVPTNSTVRA VSIMKAAAVC FISNTASQRK VEVIEGDCSA LASEVASYCD RVVAAVS