ID   PCBE_PROMA              Reviewed;         361 AA.
AC   Q9L8M2; Q7BWH4;
DT   24-JAN-2006, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-2000, sequence version 1.
DT   03-AUG-2022, entry version 98.
DE   RecName: Full=Divinyl chlorophyll a/b light-harvesting protein PcbE;
GN   Name=pcbE; OrderedLocusNames=Pro_1450;
OS   Prochlorococcus marinus (strain SARG / CCMP1375 / SS120).
OC   Bacteria; Cyanobacteria; Synechococcales; Prochlorococcaceae;
OC   Prochlorococcus.
OX   NCBI_TaxID=167539;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA], AND FUNCTION.
RC   STRAIN=SARG / CCMP1375 / SS120;
RX   PubMed=10725393; DOI=10.1073/pnas.070040897;
RA   Garczarek L., Hess W.R., Holtzendorff J., van der Staay G.W.M.,
RA   Partensky F.;
RT   "Multiplication of antenna genes as a major adaptation to low light in a
RT   marine prokaryote.";
RL   Proc. Natl. Acad. Sci. U.S.A. 97:4098-4101(2000).
RN   [2]
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   [3]
RP   FUNCTION, COFACTOR, SUBUNIT, AND SUBCELLULAR LOCATION.
RC   STRAIN=SARG / CCMP1375 / SS120;
RA   Partensky F., La Roche J., Wyman K., Falkowski P.G.;
RT   "The divinyl-chlorophyll a/b-protein complexes of two strains of the
RT   oxyphototrophic marine prokaryote Prochlorococcus -- characterization and
RT   response to changes in growth irradiance.";
RL   Photosyn. Res. 51:209-222(1997).
RN   [4]
RP   INDUCTION.
RC   STRAIN=SARG / CCMP1375 / SS120;
RX   PubMed=11575723; DOI=10.1023/a:1011681726654;
RA   Garczarek L., van der Staay G.W.M., Hess W.R., Le Gall F., Partensky F.;
RT   "Expression and phylogeny of the multiple antenna genes of the low-light-
RT   adapted strain Prochlorococcus marinus SS120 (Oxyphotobacteria).";
RL   Plant Mol. Biol. 46:683-693(2001).
RN   [5]
RP   REPRESSION UNDER IRON-STARVATION.
RC   STRAIN=SARG / CCMP1375 / SS120;
RX   PubMed=12944966; DOI=10.1038/nature01933;
RA   Bibby T.S., Mary I., Nield J., Partensky F., Barber J.;
RT   "Low-light-adapted Prochlorococcus species possess specific antennae for
RT   each photosystem.";
RL   Nature 424:1051-1054(2003).
CC   -!- FUNCTION: The antenna complex functions as a light receptor, it
CC       captures and delivers excitation energy to photosystems II and I. The
CC       Prochlorales pcb genes are not related to higher plant LHCs.
CC       {ECO:0000250|UniProtKB:Q6Q972, ECO:0000303|PubMed:10725393,
CC       ECO:0000303|Ref.3}.
CC   -!- COFACTOR:
CC       Name=divinyl chlorophyll a; Xref=ChEBI:CHEBI:73095;
CC         Evidence={ECO:0000303|Ref.3};
CC   -!- COFACTOR:
CC       Name=divinyl chlorophyll b; Xref=ChEBI:CHEBI:73096;
CC         Evidence={ECO:0000303|Ref.3};
CC   -!- SUBUNIT: The antenna complex consists of divinyl chlorophylls (a and b)
CC       and divinyl chlorophyll a/b binding proteins and binds more divinyl
CC       chlorophyll b than does the antenna complex from high-light-adapted
CC       Prochlorococcus. {ECO:0000269|Ref.3}.
CC   -!- SUBCELLULAR LOCATION: Cellular thylakoid membrane {ECO:0000269|Ref.3};
CC       Multi-pass membrane protein {ECO:0000250}.
CC   -!- INDUCTION: This transcript is strongly expressed between 4.5 and 72
CC       umol blue light/m2/s. The whole antenna complex is most highly
CC       expressed under low light; as the light levels increase antenna complex
CC       levels decrease. Thus at least in this strain the amount of antenna
CC       complex is controlled mostly at a post-transcriptional level.
CC       Transcription decreases upon iron starvation.
CC       {ECO:0000269|PubMed:11575723, ECO:0000269|PubMed:12944966}.
CC   -!- MISCELLANEOUS: This low-light-adapted strain contains 8 pcb genes.
CC       {ECO:0000303|PubMed:12917486, ECO:0000303|PubMed:12944966}.
CC   -!- SIMILARITY: Belongs to the PsbB/PsbC family. IsiA/Pcb subfamily.
CC       {ECO:0000305}.
CC   ---------------------------------------------------------------------------
CC   Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC   Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC   ---------------------------------------------------------------------------
DR   EMBL; AF198529; AAF61304.1; -; Genomic_DNA.
DR   EMBL; AE017126; AAQ00494.1; -; Genomic_DNA.
DR   RefSeq; NP_875841.1; NC_005042.1.
DR   RefSeq; WP_011125601.1; NC_005042.1.
DR   AlphaFoldDB; Q9L8M2; -.
DR   SMR; Q9L8M2; -.
DR   STRING; 167539.Pro_1450; -.
DR   EnsemblBacteria; AAQ00494; AAQ00494; Pro_1450.
DR   GeneID; 54200787; -.
DR   KEGG; pma:Pro_1450; -.
DR   PATRIC; fig|167539.5.peg.1520; -.
DR   eggNOG; ENOG5030XKS; Bacteria.
DR   HOGENOM; CLU_028310_0_0_3; -.
DR   OMA; LICSFVY; -.
DR   OrthoDB; 417558at2; -.
DR   Proteomes; UP000001420; Chromosome.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   GO; GO:0009522; C:photosystem I; IEA:UniProtKB-KW.
DR   GO; GO:0009523; C:photosystem II; IEA:UniProtKB-KW.
DR   GO; GO:0031676; C:plasma membrane-derived thylakoid membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0016168; F:chlorophyll binding; IEA:UniProtKB-KW.
DR   GO; GO:0009767; P:photosynthetic electron transport chain; IEA:InterPro.
DR   InterPro; IPR000932; PS_antenna-like.
DR   InterPro; IPR036001; PS_II_antenna-like_sf.
DR   PANTHER; PTHR33180; PTHR33180; 1.
DR   Pfam; PF00421; PSII; 2.
DR   SUPFAM; SSF161077; SSF161077; 1.
PE   1: Evidence at protein level;
KW   Chlorophyll; Chromophore; Membrane; Photosynthesis; Photosystem I;
KW   Photosystem II; Reference proteome; Thylakoid; Transmembrane;
KW   Transmembrane helix.
FT   CHAIN           1..361
FT                   /note="Divinyl chlorophyll a/b light-harvesting protein
FT                   PcbE"
FT                   /id="PRO_0000077542"
FT   TRANSMEM        27..47
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        88..108
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        149..169
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        210..230
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        250..270
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        315..335
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   361 AA;  40107 MW;  7B39C4E6F44DC3A9 CRC64;
     MQTYGNPDPT YGWWVGNSVV TNKSSRFIGS HVAHTGLIAF TAGANTLWEL ARFNPDIPMG
     HQGMVSIPHL ASLGIGFDQA GAWTGQDVAF VGIFHLICSF VYALAGLLHS VIFSEDTQNS
     SGLFADGRPE HRQAARFKLE WDNPDNQTFI LGHHLVFFGV ANIWFVEWAR VHGIYDPAIE
     AIRQVNYNLD LTQIWNHQFD FIQIDSLEDV MGGHAFLAFF QIGGGAFHIA TKQIGTYTNF
     KGAGLLSAEA VLSWSLAGIG WMAIIAAFWC ATNTTVYPEA WYGETLQLKF GISPYWIDTG
     NMDGVVTGHT SRAWLSNVHY YLGFFFIQGH LWHAIRAMGF DFRKVTSAVA NLDNSRITLS
     D