ID   PSBO_SYNE7              Reviewed;         277 AA.
AC   P11472; Q31RJ3;
DT   01-OCT-1989, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-1989, sequence version 1.
DT   03-AUG-2022, entry version 114.
DE   RecName: Full=Photosystem II manganese-stabilizing polypeptide;
DE            Short=MSP;
DE   Flags: Precursor;
GN   Name=psbO; Synonyms=woxA; OrderedLocusNames=Synpcc7942_0294;
OS   Synechococcus elongatus (strain PCC 7942 / FACHB-805) (Anacystis nidulans
OS   R2).
OC   Bacteria; Cyanobacteria; Synechococcales; Synechococcaceae; Synechococcus.
OX   NCBI_TaxID=1140;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=3120187; DOI=10.1073/pnas.84.23.8230;
RA   Kuwabara T., Reddy K.J., Sherman L.A.;
RT   "Nucleotide sequence of the gene from the cyanobacterium Anacystis nidulans
RT   R2 encoding the Mn-stabilizing protein involved in photosystem II water
RT   oxidation.";
RL   Proc. Natl. Acad. Sci. U.S.A. 84:8230-8234(1987).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=PCC 7942 / FACHB-805;
RG   US DOE Joint Genome Institute;
RA   Copeland A., Lucas S., Lapidus A., Barry K., Detter J.C., Glavina T.,
RA   Hammon N., Israni S., Pitluck S., Schmutz J., Larimer F., Land M.,
RA   Kyrpides N., Lykidis A., Richardson P.;
RT   "Complete sequence of chromosome 1 of Synechococcus elongatus PCC 7942.";
RL   Submitted (AUG-2005) to the EMBL/GenBank/DDBJ databases.
RN   [3]
RP   PROTEIN SEQUENCE OF 28-41.
RX   PubMed=2689172; DOI=10.1111/j.1432-1033.1989.tb15199.x;
RA   Kuwabara T., Nagata R., Shinohara K.;
RT   "Expression and processing of cyanobacterial Mn-stabilizing protein in
RT   Escherichia coli.";
RL   Eur. J. Biochem. 186:227-232(1989).
CC   -!- FUNCTION: MSP binds to a putative Mn-binding protein and keeps 2 of the
CC       4 Mn-atoms associated with PSII.
CC   -!- SUBUNIT: Monomer.
CC   -!- SUBCELLULAR LOCATION: Cellular thylakoid membrane; Peripheral membrane
CC       protein; Lumenal side. Note=Lumenal surface of thylakoid membrane.
CC   -!- SIMILARITY: Belongs to the PsbO family. {ECO:0000305}.
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DR   EMBL; J03002; AAA87283.1; -; Genomic_DNA.
DR   EMBL; CP000100; ABB56326.1; -; Genomic_DNA.
DR   RefSeq; WP_011243530.1; NC_007604.1.
DR   AlphaFoldDB; P11472; -.
DR   SMR; P11472; -.
DR   STRING; 1140.Synpcc7942_0294; -.
DR   PRIDE; P11472; -.
DR   EnsemblBacteria; ABB56326; ABB56326; Synpcc7942_0294.
DR   KEGG; syf:Synpcc7942_0294; -.
DR   eggNOG; ENOG502Z7ZP; Bacteria.
DR   HOGENOM; CLU_063138_0_0_3; -.
DR   OMA; GKANDCP; -.
DR   OrthoDB; 1569080at2; -.
DR   BioCyc; MetaCyc:SYNPCC7942_0294-MON; -.
DR   BioCyc; SYNEL:SYNPCC7942_0294-MON; -.
DR   GO; GO:0009654; C:photosystem II oxygen evolving complex; IEA:InterPro.
DR   GO; GO:0031676; C:plasma membrane-derived thylakoid membrane; IEA:UniProtKB-SubCell.
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   Direct protein sequencing; Manganese; Membrane; Photosynthesis;
KW   Photosystem II; Signal; Thylakoid.
FT   SIGNAL          1..27
FT                   /evidence="ECO:0000269|PubMed:2689172"
FT   CHAIN           28..277
FT                   /note="Photosystem II manganese-stabilizing polypeptide"
FT                   /id="PRO_0000029569"
SQ   SEQUENCE   277 AA;  29304 MW;  8FF8C990F8D6556E CRC64;
     MRYRAFLAAF LAVCLGVLTA CSSGPTAADL GTLTYDQIKD TGLANKCLSL KESARGTIPL
     EAGKKYALTD LCLEPQEFFV KEEPGNKRQK AEFVPGKVLT RYTSSLDQVY GDLALKADGT
     VSFTEKGGID FQAITVLLPG GEEVPFLFTV KGLVASTSEP ATSINTSTDL RGGYRVPSYR
     TSNFLDPKAR GLTTGYESAV AIPSAGDAED LTKENVKRFV TGQGEISLAV SKVDGATGEV
     AGVFTAIQPS DTDMGGKEAV DVKLVGQFYG RIEPADA