ID   PHEA2_PARMW             Reviewed;         165 AA.
AC   P0A316; P37720;
DT   15-MAR-2005, integrated into UniProtKB/Swiss-Prot.
DT   15-MAR-2005, sequence version 1.
DT   03-AUG-2022, entry version 91.
DE   RecName: Full=C-phycoerythrin class 2 subunit alpha;
DE   AltName: Full=C-phycoerythrin class II alpha chain;
GN   Name=mpeA; OrderedLocusNames=SYNW2009;
OS   Parasynechococcus marenigrum (strain WH8102).
OC   Bacteria; Cyanobacteria; Synechococcales; Prochlorococcaceae;
OC   Parasynechococcus; Parasynechococcus marenigrum.
OX   NCBI_TaxID=84588;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=WH8102;
RX   PubMed=12917641; DOI=10.1038/nature01943;
RA   Palenik B., Brahamsha B., Larimer F.W., Land M.L., Hauser L., Chain P.,
RA   Lamerdin J.E., Regala W., Allen E.E., McCarren J., Paulsen I.T.,
RA   Dufresne A., Partensky F., Webb E.A., Waterbury J.;
RT   "The genome of a motile marine Synechococcus.";
RL   Nature 424:1037-1042(2003).
CC   -!- FUNCTION: Light-harvesting photosynthetic bile pigment-protein from the
CC       phycobiliprotein complex.
CC   -!- SUBUNIT: Heterodimer of an alpha and a beta chain.
CC   -!- SUBCELLULAR LOCATION: Cellular thylakoid membrane {ECO:0000250};
CC       Peripheral membrane protein {ECO:0000250}; Cytoplasmic 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; BX569694; CAE08524.1; -; Genomic_DNA.
DR   RefSeq; WP_011128867.1; NC_005070.1.
DR   AlphaFoldDB; P0A316; -.
DR   SMR; P0A316; -.
DR   STRING; 84588.SYNW2009; -.
DR   EnsemblBacteria; CAE08524; CAE08524; SYNW2009.
DR   KEGG; syw:SYNW2009; -.
DR   eggNOG; ENOG5030NUX; Bacteria.
DR   HOGENOM; CLU_104219_2_0_3; -.
DR   OMA; CKRDFVH; -.
DR   OrthoDB; 1328188at2; -.
DR   Proteomes; UP000001422; 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   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   3: Inferred from homology;
KW   Antenna complex; Bile pigment; Chromophore; Electron transport; Membrane;
KW   Photosynthesis; Phycobilisome; Thylakoid; Transport.
FT   CHAIN           1..165
FT                   /note="C-phycoerythrin class 2 subunit alpha"
FT                   /id="PRO_0000199186"
FT   BINDING         75
FT                   /ligand="phycourobilin"
FT                   /ligand_id="ChEBI:CHEBI:189062"
FT                   /ligand_label="1"
FT                   /note="covalent, via 1 link"
FT                   /evidence="ECO:0000250"
FT   BINDING         83
FT                   /ligand="phycourobilin"
FT                   /ligand_id="ChEBI:CHEBI:189062"
FT                   /ligand_label="2"
FT                   /note="covalent, via 1 link"
FT                   /evidence="ECO:0000250"
FT   BINDING         140
FT                   /ligand="phycourobilin"
FT                   /ligand_id="ChEBI:CHEBI:189062"
FT                   /ligand_label="3"
FT                   /note="covalent, via 1 link"
FT                   /evidence="ECO:0000250"
SQ   SEQUENCE   165 AA;  17729 MW;  DBD252CC5DD39B2C CRC64;
     MKSVITTVVG AADSASRFPS ASDMESVQGS IQRAAARLEA AEKLAGNYDQ VAQEAVDAVY
     NQYPNGATGR QPRKCATEGK EKCKRDFVHY LRLINYCLVT GGTGPLDELA INGQKEVYKA
     LSIDAGTYVA GFSHLRSRGC APRDMSAQAL TAYNQLLDYV INSLG