ID   PYS1_SYNP2              Reviewed;          80 AA.
AC   P31966; B1XIU1;
DT   01-JUL-1993, integrated into UniProtKB/Swiss-Prot.
DT   01-JUL-1993, sequence version 1.
DT   25-MAY-2022, entry version 112.
DE   RecName: Full=Phycobilisome 8.9 kDa linker polypeptide, phycocyanin-associated, rod;
DE            Short=L-8.9/R;
DE   AltName: Full=Rod-capping linker protein;
GN   Name=cpcD; OrderedLocusNames=SYNPCC7002_A2212;
OS   Synechococcus sp. (strain ATCC 27264 / PCC 7002 / PR-6) (Agmenellum
OS   quadruplicatum).
OC   Bacteria; Cyanobacteria; Synechococcales; Synechococcaceae; Synechococcus;
OC   unclassified Synechococcus.
OX   NCBI_TaxID=32049;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=1644801; DOI=10.1016/s0021-9258(18)41978-3;
RA   Zhou J., Gasparich G.E., Stirewalt V.L., de Lorimier R., Bryant D.A.;
RT   "The cpcE and cpcF genes of Synechococcus sp. PCC 7002. Construction and
RT   phenotypic characterization of interposon mutants.";
RL   J. Biol. Chem. 267:16138-16145(1992).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=2118804; DOI=10.1016/0005-2728(90)90121-j;
RA   de Lorimier R., Bryant D.A., Stevens S.E. Jr.;
RT   "Genetic analysis of a 9 kDa phycocyanin-associated linker polypeptide.";
RL   Biochim. Biophys. Acta 1019:29-41(1990).
RN   [3]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 27264 / PCC 7002 / PR-6;
RA   Li T., Zhao J., Zhao C., Liu Z., Zhao F., Marquardt J., Nomura C.T.,
RA   Persson S., Detter J.C., Richardson P.M., Lanz C., Schuster S.C., Wang J.,
RA   Li S., Huang X., Cai T., Yu Z., Luo J., Zhao J., Bryant D.A.;
RT   "Complete sequence of Synechococcus sp. PCC 7002.";
RL   Submitted (FEB-2008) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Rod linker protein, associated with phycocyanin. Linker
CC       polypeptides determine the state of aggregation and the location of the
CC       disk-shaped phycobiliprotein units within the phycobilisome and
CC       modulate their spectroscopic properties in order to mediate a directed
CC       and optimal energy transfer.
CC   -!- SUBCELLULAR LOCATION: Cellular thylakoid membrane {ECO:0000250};
CC       Peripheral membrane protein {ECO:0000250}; Cytoplasmic side
CC       {ECO:0000250}. Note=This protein occurs in the rod, it is associated
CC       with phycocyanin. {ECO:0000305}.
CC   -!- SIMILARITY: Belongs to the phycobilisome linker protein family.
CC       {ECO:0000305}.
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DR   EMBL; M93569; AAA27307.1; -; Genomic_DNA.
DR   EMBL; X55756; CAA39283.1; -; Genomic_DNA.
DR   EMBL; CP000951; ACB00193.1; -; Genomic_DNA.
DR   RefSeq; WP_012307811.1; NC_010475.1.
DR   AlphaFoldDB; P31966; -.
DR   SMR; P31966; -.
DR   STRING; 32049.SYNPCC7002_A2212; -.
DR   EnsemblBacteria; ACB00193; ACB00193; SYNPCC7002_A2212.
DR   KEGG; syp:SYNPCC7002_A2212; -.
DR   eggNOG; COG0369; Bacteria.
DR   HOGENOM; CLU_173132_1_0_3; -.
DR   OMA; YSRMNEE; -.
DR   Proteomes; UP000001688; Chromosome.
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   InterPro; IPR008213; CpcD-like_dom.
DR   Pfam; PF01383; CpcD; 1.
DR   SMART; SM01094; CpcD; 1.
DR   PROSITE; PS51441; CPCD_LIKE; 1.
PE   3: Inferred from homology;
KW   Antenna complex; Membrane; Photosynthesis; Phycobilisome;
KW   Reference proteome; Thylakoid.
FT   CHAIN           1..80
FT                   /note="Phycobilisome 8.9 kDa linker polypeptide,
FT                   phycocyanin-associated, rod"
FT                   /id="PRO_0000199232"
FT   DOMAIN          13..71
FT                   /note="CpcD-like"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00771"
SQ   SEQUENCE   80 AA;  9055 MW;  6C1F0FBA3688231A CRC64;
     MLSQFANGTE AASRVFTYEV QGLRQTEETD NQEYAFRRSG SVFINVPYAR MNQEMQRILR
     LGGKIVSIKP YTGATASDEE