ID   PSBO_EUGGR              Reviewed;         338 AA.
AC   P46483;
DT   01-NOV-1995, integrated into UniProtKB/Swiss-Prot.
DT   01-FEB-1996, sequence version 2.
DT   25-MAY-2022, entry version 66.
DE   RecName: Full=Oxygen-evolving enhancer protein 1, chloroplastic;
DE            Short=OEE1;
DE   Flags: Precursor;
GN   Name=PSBO;
OS   Euglena gracilis.
OC   Eukaryota; Discoba; Euglenozoa; Euglenida; Spirocuta; Euglenophyceae;
OC   Euglenales; Euglenaceae; Euglena.
OX   NCBI_TaxID=3039;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [MRNA], AND PROTEIN SEQUENCE OF 94-110.
RC   STRAIN=Z / UTEX 753;
RX   PubMed=8111018; DOI=10.1007/bf00040587;
RA   Shigemori Y., Inagaki J., Mori H., Nishimura M., Takahashi S., Yamamoto Y.;
RT   "The presequence of the precursor to the nucleus-encoded 30 kDa protein of
RT   photosystem II in Euglena gracilis Z includes two hydrophobic domains.";
RL   Plant Mol. Biol. 24:209-215(1994).
CC   -!- FUNCTION: Stabilizes the manganese cluster which is the primary site of
CC       water splitting. {ECO:0000250}.
CC   -!- SUBUNIT: Monomer.
CC   -!- SUBCELLULAR LOCATION: Plastid, chloroplast thylakoid membrane.
CC       Note=Associated with the photosystem II complex.
CC   -!- SIMILARITY: Belongs to the PsbO family. {ECO:0000305}.
CC   -!- SEQUENCE CAUTION:
CC       Sequence=BAA03529.2; Type=Erroneous initiation; Evidence={ECO:0000305};
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DR   EMBL; D14702; BAA03529.2; ALT_INIT; mRNA.
DR   PIR; S42640; S42640.
DR   AlphaFoldDB; P46483; -.
DR   SMR; P46483; -.
DR   GO; GO:0009535; C:chloroplast thylakoid membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0009654; C:photosystem II oxygen evolving complex; IEA:InterPro.
DR   GO; GO:0010242; F:oxygen evolving activity; IEA:InterPro.
DR   GO; GO:0010207; P:photosystem II assembly; IEA:InterPro.
DR   GO; GO:0042549; P:photosystem II stabilization; IEA:InterPro.
DR   InterPro; IPR011250; OMP/PagP_b-brl.
DR   InterPro; IPR002628; PSII_MSP.
DR   PANTHER; PTHR34058; PTHR34058; 1.
DR   Pfam; PF01716; MSP; 1.
DR   SUPFAM; SSF56925; SSF56925; 1.
PE   1: Evidence at protein level;
KW   Chloroplast; Direct protein sequencing; Manganese; Membrane;
KW   Photosynthesis; Photosystem II; Plastid; Thylakoid; Transit peptide.
FT   TRANSIT         1..93
FT                   /note="Chloroplast"
FT                   /evidence="ECO:0000269|PubMed:8111018"
FT   CHAIN           94..338
FT                   /note="Oxygen-evolving enhancer protein 1, chloroplastic"
FT                   /id="PRO_0000029556"
SQ   SEQUENCE   338 AA;  35272 MW;  1034FE4010B1A2BB CRC64;
     MSRVNLAAPA NHVVPRAAQE EVQGEYQTAS NNWAVAAMAS AGAAVGAAVL AMRRRATNTY
     EAIREDPEAV LAGAGRAMGA ALIGAAVAGS ANAASLTYDE LQSLSYLEVK SSGIAGTCPV
     LADGVSSKLS LKAGKYEINN WCLEPSSFQV KLPPTEKQQV TEFERTKLMT RLTYTLDAIS
     ADLNVGGDGS WTIQEKDGLD YAATTVQLAG GERVPFLFTI KNLLAKGDAG QFLGQFDVPS
     YRGATFLDPK GRGGASGYDT AVALPASGDD EEYAKENSKS TAASVGTIAF KVAKVNAETG
     EIAGVFESIQ PSDTDLGAKV PKDIKTSGVW YAQISPSK