ID   PHRA_SYNPZ              Reviewed;         162 AA.
AC   P11394;
DT   01-JUL-1989, integrated into UniProtKB/Swiss-Prot.
DT   23-JAN-2007, sequence version 3.
DT   03-AUG-2022, entry version 94.
DE   RecName: Full=R-phycocyanin-2 subunit alpha;
DE   AltName: Full=R-phycocyanin II alpha chain;
GN   Name=rpcA;
OS   Synechococcus sp. (strain WH8103).
OC   Bacteria; Cyanobacteria; Synechococcales; Synechococcaceae; Synechococcus;
OC   unclassified Synechococcus.
OX   NCBI_TaxID=29410;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=8425055; DOI=10.1007/bf00019939;
RA   de Lorimier R., Wilbanks S.M., Glazer A.N.;
RT   "Genes of the R-phycocyanin II locus of marine Synechococcus spp., and
RT   comparison of protein-chromophore interactions in phycocyanins differing in
RT   bilin composition.";
RL   Plant Mol. Biol. 21:225-237(1993).
RN   [2]
RP   PROTEIN SEQUENCE OF 2-21 AND 84-86, AND SUBUNIT.
RX   PubMed=3571260; DOI=10.1016/s0021-9258(18)45573-1;
RA   Ong L.J., Glazer A.N.;
RT   "R-phycocyanin II, a new phycocyanin occurring in marine Synechococcus
RT   species. Identification of the terminal energy acceptor bilin in
RT   phycocyanins.";
RL   J. Biol. Chem. 262:6323-6327(1987).
CC   -!- FUNCTION: Light-harvesting photosynthetic bile pigment-protein from the
CC       phycobiliprotein complex.
CC   -!- SUBUNIT: Heterodimer of an alpha and a beta chain.
CC       {ECO:0000269|PubMed:3571260}.
CC   -!- SUBCELLULAR LOCATION: Cellular thylakoid membrane; Peripheral membrane
CC       protein; Cytoplasmic side. Note=Part of the phycobilisome rod.
CC   -!- PTM: Contains one covalently linked bilin chromophore.
CC   -!- SIMILARITY: Belongs to the phycobiliprotein family. {ECO:0000305}.
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DR   EMBL; M95289; AAA27366.1; -; Genomic_DNA.
DR   RefSeq; WP_049692480.1; NZ_LN847356.1.
DR   AlphaFoldDB; P11394; -.
DR   SMR; P11394; -.
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; IPR006246; Phycocyanin_a.
DR   Pfam; PF00502; Phycobilisome; 1.
DR   PIRSF; PIRSF000081; Phycocyanin; 1.
DR   SUPFAM; SSF46458; SSF46458; 1.
DR   TIGRFAMs; TIGR01338; phycocy_alpha; 1.
PE   1: Evidence at protein level;
KW   Antenna complex; Bile pigment; Chromophore; Direct protein sequencing;
KW   Electron transport; Membrane; Photosynthesis; Phycobilisome; Thylakoid;
KW   Transport.
FT   INIT_MET        1
FT                   /note="Removed"
FT                   /evidence="ECO:0000269|PubMed:3571260"
FT   CHAIN           2..162
FT                   /note="R-phycocyanin-2 subunit alpha"
FT                   /id="PRO_0000199139"
FT   BINDING         84
FT                   /ligand="(2R,3E)-phycoerythrobilin"
FT                   /ligand_id="ChEBI:CHEBI:85276"
FT                   /note="covalent, via 1 link"
SQ   SEQUENCE   162 AA;  17335 MW;  613AC098ECAAB840 CRC64;
     MKTPLTEAVA AADSQGRFLS NTEVQAASGR FNRAKASLEA AKALTSKADS LVNGAAQAVY
     SKFPYTTQME GSNYSATPEG KAKCSRDVGY YLRMITYCLV AGGTGPMDDY LIAGLDEINR
     TFELSPSWYV EALKHIKANH GLSGDAATEA NSYIDYAINA LI