ID   PHEB_PROMA              Reviewed;         182 AA.
AC   Q7VDN2;
DT   11-JAN-2011, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-2003, sequence version 1.
DT   03-AUG-2022, entry version 99.
DE   RecName: Full=R-phycoerythrin subunit beta;
GN   Name=cpeB; OrderedLocusNames=Pro_0337;
OS   Prochlorococcus marinus (strain SARG / CCMP1375 / SS120).
OC   Bacteria; Cyanobacteria; Synechococcales; Prochlorococcaceae;
OC   Prochlorococcus.
OX   NCBI_TaxID=167539;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=SARG / CCMP1375 / SS120;
RX   PubMed=12917486; DOI=10.1073/pnas.1733211100;
RA   Dufresne A., Salanoubat M., Partensky F., Artiguenave F., Axmann I.M.,
RA   Barbe V., Duprat S., Galperin M.Y., Koonin E.V., Le Gall F., Makarova K.S.,
RA   Ostrowski M., Oztas S., Robert C., Rogozin I.B., Scanlan D.J.,
RA   Tandeau de Marsac N., Weissenbach J., Wincker P., Wolf Y.I., Hess W.R.;
RT   "Genome sequence of the cyanobacterium Prochlorococcus marinus SS120, a
RT   nearly minimal oxyphototrophic genome.";
RL   Proc. Natl. Acad. Sci. U.S.A. 100:10020-10025(2003).
RN   [2]
RP   INDUCTION.
RX   PubMed=16156734; DOI=10.1111/j.1462-2920.2005.00855.x;
RA   Steglich C., Frankenberg-Dinkel N., Penno S., Hess W.R.;
RT   "A green light-absorbing phycoerythrin is present in the high-light-adapted
RT   marine cyanobacterium Prochlorococcus sp. MED4.";
RL   Environ. Microbiol. 7:1611-1618(2005).
CC   -!- FUNCTION: Green-light absorbing phycoerythrin of unknown function.
CC       {ECO:0000250}.
CC   -!- SUBUNIT: Homodimer. {ECO:0000250}.
CC   -!- INDUCTION: Constitutively expressed at low levels.
CC       {ECO:0000269|PubMed:16156734}.
CC   -!- PTM: Contains one covalently linked phycoerythrobilin chromophore.
CC       {ECO:0000250}.
CC   -!- MISCELLANEOUS: Prochlorococcus does not possess phycobilisomes, instead
CC       it uses a divinyl-chlorophyll antenna complex for light harvesting.
CC   -!- SIMILARITY: Belongs to the phycobiliprotein family. {ECO:0000305}.
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DR   EMBL; AE017126; AAP99383.1; -; Genomic_DNA.
DR   RefSeq; NP_874731.1; NC_005042.1.
DR   RefSeq; WP_011124492.1; NC_005042.1.
DR   AlphaFoldDB; Q7VDN2; -.
DR   SMR; Q7VDN2; -.
DR   STRING; 167539.Pro_0337; -.
DR   EnsemblBacteria; AAP99383; AAP99383; Pro_0337.
DR   GeneID; 54199699; -.
DR   KEGG; pma:Pro_0337; -.
DR   PATRIC; fig|167539.5.peg.346; -.
DR   eggNOG; ENOG502ZAPU; Bacteria.
DR   HOGENOM; CLU_104219_0_0_3; -.
DR   OMA; CYPTRRM; -.
DR   OrthoDB; 1300235at2; -.
DR   Proteomes; UP000001420; Chromosome.
DR   GO; GO:0030089; C:phycobilisome; IEA:InterPro.
DR   GO; GO:0015979; P:photosynthesis; IEA:InterPro.
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   2: Evidence at transcript level;
KW   Bile pigment; Chromophore; Reference proteome.
FT   CHAIN           1..182
FT                   /note="R-phycoerythrin subunit beta"
FT                   /id="PRO_0000403182"
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"
SQ   SEQUENCE   182 AA;  19248 MW;  1B62FB4667AE63BA CRC64;
     MLDAFSRAVV SADSKGATIG SAELSSLRKY VADANKRIDA TLAITQNVSC IAADAISGMV
     CENTGLTQPG GHCYPTRRMA ACLRDGEIIL RYVSYALLAG DPSVLDDRCI NGLKETYIAL
     GVPLSNAIRA IEIMKIATVA IMTETNSGRK MFEGINSGSG AECKDIASEA ASYFDRVIDA
     LN