ID   PSBP_SPIOL              Reviewed;         267 AA.
AC   P12302;
DT   01-OCT-1989, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-1989, sequence version 1.
DT   25-MAY-2022, entry version 96.
DE   RecName: Full=Oxygen-evolving enhancer protein 2, chloroplastic;
DE            Short=OEE2;
DE   AltName: Full=23 kDa subunit of oxygen evolving system of photosystem II;
DE   AltName: Full=23 kDa thylakoid membrane protein;
DE   AltName: Full=OEC 23 kDa subunit;
DE   Flags: Precursor;
GN   Name=PSBP;
OS   Spinacia oleracea (Spinach).
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae;
OC   Caryophyllales; Chenopodiaceae; Chenopodioideae; Anserineae; Spinacia.
OX   NCBI_TaxID=3562;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [MRNA].
RA   Jansen T., Steppuhn R.C.J., Reinke H., Beyreuther K., Jansson C.,
RA   Andersson B., Herrmann R.G.;
RT   "Nucleotide sequence of cDNA clones encoding the complete '23 kDa' and '16
RT   kDa' precursor proteins associated with the photosynthetic oxygen-evolving
RT   complex from spinach.";
RL   FEBS Lett. 216:234-240(1987).
RN   [2]
RP   PROTEIN SEQUENCE OF 83-99.
RA   Vater J., Salnikow J., Jansson C.;
RT   "N-terminal sequence determination and secondary structure analysis of
RT   extrinsic membrane proteins in the water-splitting complex of spinach.";
RL   FEBS Lett. 203:230-234(1986).
RN   [3]
RP   PROTEIN SEQUENCE OF 82-117.
RA   Murata N., Kajiura H., Fujimura Y., Miyao M., Murata T., Watanabe A.,
RA   Shinozaki K.;
RT   "Partial amino acid sequences of the proteins of pea and spinach
RT   photosystem II complex.";
RL   Prog. Photosyn. Res. 1:701-704(1987).
CC   -!- FUNCTION: May be involved in the regulation of photosystem II.
CC   -!- SUBCELLULAR LOCATION: Plastid, chloroplast thylakoid membrane.
CC       Note=Associated with the photosystem II complex.
CC   -!- INDUCTION: By light.
CC   -!- SIMILARITY: Belongs to the psbP family. {ECO:0000305}.
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DR   EMBL; X05511; CAA29055.1; -; mRNA.
DR   PIR; C24166; C24166.
DR   PIR; S00005; S00005.
DR   PDB; 2VU4; X-ray; 1.98 A; A=82-267.
DR   PDB; 3JCU; EM; 3.20 A; P/p=1-267.
DR   PDB; 4RTI; X-ray; 1.80 A; A=82-267.
DR   PDBsum; 2VU4; -.
DR   PDBsum; 3JCU; -.
DR   PDBsum; 4RTI; -.
DR   AlphaFoldDB; P12302; -.
DR   BMRB; P12302; -.
DR   SMR; P12302; -.
DR   DIP; DIP-62021N; -.
DR   IntAct; P12302; 1.
DR   OrthoDB; 1239588at2759; -.
DR   EvolutionaryTrace; P12302; -.
DR   GO; GO:0009535; C:chloroplast thylakoid membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0019898; C:extrinsic component of membrane; IEA:InterPro.
DR   GO; GO:0009654; C:photosystem II oxygen evolving complex; IEA:InterPro.
DR   GO; GO:0005509; F:calcium ion binding; IEA:InterPro.
DR   GO; GO:0015979; P:photosynthesis; IEA:UniProtKB-KW.
DR   DisProt; DP01351; -.
DR   InterPro; IPR016123; Mog1/PsbP_a/b/a-sand.
DR   InterPro; IPR002683; PsbP_C.
DR   Pfam; PF01789; PsbP; 1.
DR   SUPFAM; SSF55724; SSF55724; 1.
PE   1: Evidence at protein level;
KW   3D-structure; Chloroplast; Direct protein sequencing; Membrane;
KW   Photosynthesis; Photosystem II; Plastid; Thylakoid; Transit peptide.
FT   TRANSIT         1..81
FT                   /note="Chloroplast"
FT                   /evidence="ECO:0000269|Ref.3"
FT   CHAIN           82..267
FT                   /note="Oxygen-evolving enhancer protein 2, chloroplastic"
FT                   /id="PRO_0000029582"
FT   STRAND          97..103
FT                   /evidence="ECO:0007829|PDB:4RTI"
FT   STRAND          105..112
FT                   /evidence="ECO:0007829|PDB:4RTI"
FT   STRAND          126..132
FT                   /evidence="ECO:0007829|PDB:4RTI"
FT   STRAND          135..146
FT                   /evidence="ECO:0007829|PDB:4RTI"
FT   HELIX           152..155
FT                   /evidence="ECO:0007829|PDB:4RTI"
FT   HELIX           158..164
FT                   /evidence="ECO:0007829|PDB:4RTI"
FT   HELIX           166..168
FT                   /evidence="ECO:0007829|PDB:4RTI"
FT   STRAND          181..184
FT                   /evidence="ECO:0007829|PDB:4RTI"
FT   STRAND          186..198
FT                   /evidence="ECO:0007829|PDB:4RTI"
FT   STRAND          208..215
FT                   /evidence="ECO:0007829|PDB:4RTI"
FT   STRAND          224..233
FT                   /evidence="ECO:0007829|PDB:4RTI"
FT   STRAND          236..245
FT                   /evidence="ECO:0007829|PDB:4RTI"
FT   HELIX           246..250
FT                   /evidence="ECO:0007829|PDB:4RTI"
FT   HELIX           253..263
FT                   /evidence="ECO:0007829|PDB:4RTI"
SQ   SEQUENCE   267 AA;  28461 MW;  0484B1EB5597F41F CRC64;
     MASTACFLHH HAAISSPAAG RGSAAQRYQA VSIKPNQIVC KAQKQDDNEA NVLNSGVSRR
     LALTVLIGAA AVGSKVSPAD AAYGEAANVF GKPKKNTEFM PYNGDGFKLL VPSKWNPSKE
     KEFPGQVLRY EDNFDATSNL SVLVQPTDKK SITDFGSPED FLSQVDYLLG KQAYFGKTDS
     EGGFDSGVVA SANVLESSTP VVDGKQYYSI TVLTRTADGD EGGKHQVIAA TVKDGKLYIC
     KAQAGDKRWF KGAKKFVESA TSSFSVA