ID   PSAF_SYNEL              Reviewed;         164 AA.
AC   P0A402; P25899;
DT   15-MAR-2005, integrated into UniProtKB/Swiss-Prot.
DT   15-MAR-2005, sequence version 1.
DT   25-MAY-2022, entry version 50.
DE   RecName: Full=Photosystem I reaction center subunit III;
DE   AltName: Full=PSI-F;
DE   Flags: Precursor;
GN   Name=psaF;
OS   Synechococcus elongatus.
OC   Bacteria; Cyanobacteria; Synechococcales; Synechococcaceae; Synechococcus.
OX   NCBI_TaxID=32046;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=8486290; DOI=10.1016/0378-1119(93)90618-d;
RA   Muehlenhoff U., Haehnel W., Witt H.T., Herrmann R.G.;
RT   "Genes encoding eleven subunits of photosystem I from the thermophilic
RT   cyanobacterium Synechococcus sp.";
RL   Gene 127:71-78(1993).
RN   [2]
RP   PROTEIN SEQUENCE OF 24-38.
RX   PubMed=8382079; DOI=10.1016/0005-2728(93)90187-k;
RA   Hatanaka H., Sonoike K., Hirano M., Katoh S.;
RT   "Small subunits of Photosystem I reaction center complexes from
RT   Synechococcus elongatus. I. Is the psaF gene product required for oxidation
RT   of cytochrome c-553?";
RL   Biochim. Biophys. Acta 1141:45-51(1993).
RN   [3]
RP   X-RAY CRYSTALLOGRAPHY (4.0 ANGSTROMS).
RX   PubMed=8901876; DOI=10.1038/nsb1196-965;
RA   Krauss N., Schubert W.-D., Klukas O., Fromme P., Witt H.T., Saenger W.;
RT   "Photosystem I at 4-A resolution represents the first structural model of a
RT   joint photosynthetic reaction centre and core antenna system.";
RL   Nat. Struct. Biol. 3:965-973(1996).
CC   -!- FUNCTION: Probably participates in efficiency of electron transfer from
CC       plastocyanin to P700 (or cytochrome c553 in algae and cyanobacteria).
CC       This plastocyanin-docking protein contributes to the specific
CC       association of plastocyanin to PSI.
CC   -!- SIMILARITY: Belongs to the PsaF family. {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; X63765; CAA45299.1; -; Genomic_DNA.
DR   AlphaFoldDB; P0A402; -.
DR   SMR; P0A402; -.
DR   GO; GO:0009538; C:photosystem I reaction center; IEA:InterPro.
DR   GO; GO:0015979; P:photosynthesis; IEA:UniProtKB-KW.
DR   Gene3D; 1.10.8.110; -; 1.
DR   InterPro; IPR003666; PSI_PsaF.
DR   InterPro; IPR036577; PSI_PsaF_sf.
DR   PANTHER; PTHR34939; PTHR34939; 2.
DR   Pfam; PF02507; PSI_PsaF; 2.
DR   SUPFAM; SSF81536; SSF81536; 1.
PE   1: Evidence at protein level;
KW   Direct protein sequencing; Photosynthesis; Photosystem I; Signal.
FT   SIGNAL          1..23
FT                   /evidence="ECO:0000269|PubMed:8382079"
FT   CHAIN           24..164
FT                   /note="Photosystem I reaction center subunit III"
FT                   /id="PRO_0000029353"
SQ   SEQUENCE   164 AA;  17699 MW;  8B4EE55F926FC9C9 CRC64;
     MRRFLALLLV LTLWLGFTPL ASADVAGLVP CKDSPAFQKR AAAAVNTTAD PASGQKRFER
     YSQALCGEDG LPHLVVDGRL SRAGDFLIPS VLFLYIAGWI GWVGRAYLIA VRNSGEANEK
     EIIIDVPLAI KCMLTGFAWP LAALKELASG ELTAKDNEIT VSPR