ID   PYG_GALSU               Reviewed;         243 AA.
AC   Q02074;
DT   01-JUL-1993, integrated into UniProtKB/Swiss-Prot.
DT   23-JAN-2007, sequence version 3.
DT   25-MAY-2022, entry version 80.
DE   RecName: Full=Phycobilisome rod-core linker polypeptide cpcG;
GN   Name=cpcG; Synonyms=cpcC;
OS   Galdieria sulphuraria (Red alga).
OG   Plastid; Chloroplast.
OC   Eukaryota; Rhodophyta; Bangiophyceae; Cyanidiales; Cyanidiaceae; Galdieria.
OX   NCBI_TaxID=130081;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   STRAIN=14-1-1 / Isolate 107.79/Goettingen;
RX   PubMed=1391770; DOI=10.1007/bf00014494;
RA   Valentin K.-U., Maid U., Emich A., Zetsche K.;
RT   "Organization and expression of a phycobiliprotein gene cluster from the
RT   unicellular red alga Cyanidium caldarium.";
RL   Plant Mol. Biol. 20:267-276(1992).
CC   -!- FUNCTION: Rod-core linker protein required for attachment of
CC       phycocyanin to allophycocyanin in cores of phycobilisomes.
CC       {ECO:0000250}.
CC   -!- FUNCTION: Linker polypeptides determine the state of aggregation and
CC       the location of the disk-shaped phycobiliprotein units within the
CC       phycobilisome and modulate their spectroscopic properties in order to
CC       mediate a directed and optimal energy transfer. {ECO:0000250}.
CC   -!- SUBUNIT: The phycobilisome is a hemidiscoidal structure that is
CC       composed of two distinct substructures: a core complex and a number of
CC       rods radiating from the core. {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Plastid, chloroplast thylakoid membrane
CC       {ECO:0000250}; Peripheral membrane protein {ECO:0000250}; Stromal side
CC       {ECO:0000250}.
CC   -!- MISCELLANEOUS: Although originally identified as Cyanidium caldarium,
CC       these sequences derive from Galdieria sulphuraria. {ECO:0000305}.
CC   -!- SIMILARITY: Belongs to the phycobilisome linker protein family.
CC       {ECO:0000255|PROSITE-ProRule:PRU00775}.
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DR   EMBL; X57251; CAA40533.1; -; Genomic_DNA.
DR   AlphaFoldDB; Q02074; -.
DR   SMR; Q02074; -.
DR   STRING; 130081.XP_005704983.1; -.
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; 1.10.3130.20; -; 1.
DR   InterPro; IPR001297; PBS_linker_dom.
DR   InterPro; IPR038255; PBS_linker_sf.
DR   Pfam; PF00427; PBS_linker_poly; 1.
DR   PROSITE; PS51445; PBS_LINKER; 1.
PE   3: Inferred from homology;
KW   Antenna complex; Chloroplast; Membrane; Photosynthesis; Phycobilisome;
KW   Plastid; Thylakoid.
FT   INIT_MET        1
FT                   /note="Removed"
FT                   /evidence="ECO:0000250"
FT   CHAIN           2..243
FT                   /note="Phycobilisome rod-core linker polypeptide cpcG"
FT                   /id="PRO_0000199249"
FT   DOMAIN          11..191
FT                   /note="PBS-linker"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00775"
SQ   SEQUENCE   243 AA;  29026 MW;  D2469DBEACA72D2A CRC64;
     MSIPLLYYPL STQNQRVESF EILSNEEQSK IYTTDTLPSA SEMDELIWAA YRQIFSEHQI
     LKFTRQRFLE SQLRFNQIKV REFIRGLAIS DSFRKLNYDV NNNYRFVELC VQRILGRDVY
     NEKEKIAWSI VICNKGVIGF IDCLINSQEY LENFGDNIVP YQRRRIIFQR VNGETPFNLK
     TPRYGIEFRD KLVKPQFIWQ GAIRRFRPQE QRPRAGDPVL FLNMVYDLNI TPKFNRYPGL
     VNR