ID   PSAF_CYACA              Reviewed;         187 AA.
AC   Q9TLW6;
DT   01-JUN-2001, integrated into UniProtKB/Swiss-Prot.
DT   01-MAY-2000, sequence version 1.
DT   25-MAY-2022, entry version 61.
DE   RecName: Full=Photosystem I reaction center subunit III;
DE   AltName: Full=PSI-F;
DE   Flags: Precursor;
GN   Name=psaF;
OS   Cyanidium caldarium (Red alga).
OG   Plastid; Chloroplast.
OC   Eukaryota; Rhodophyta; Bangiophyceae; Cyanidiales; Cyanidiaceae; Cyanidium.
OX   NCBI_TaxID=2771;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=RK-1;
RX   PubMed=11040290; DOI=10.1007/s002390010101;
RA   Gloeckner G., Rosenthal A., Valentin K.-U.;
RT   "The structure and gene repertoire of an ancient red algal plastid
RT   genome.";
RL   J. Mol. Evol. 51:382-390(2000).
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   -!- SUBCELLULAR LOCATION: Plastid, chloroplast thylakoid membrane
CC       {ECO:0000305}; Single-pass membrane protein {ECO:0000305}.
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; AF022186; AAF12941.1; -; Genomic_DNA.
DR   RefSeq; NP_045152.1; NC_001840.1.
DR   AlphaFoldDB; Q9TLW6; -.
DR   SMR; Q9TLW6; -.
DR   GeneID; 800116; -.
DR   GO; GO:0009535; C:chloroplast thylakoid membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
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; 1.
DR   Pfam; PF02507; PSI_PsaF; 1.
DR   SUPFAM; SSF81536; SSF81536; 1.
PE   3: Inferred from homology;
KW   Chloroplast; Membrane; Photosynthesis; Photosystem I; Plastid; Signal;
KW   Thylakoid; Transmembrane; Transmembrane helix.
FT   SIGNAL          1..28
FT                   /evidence="ECO:0000255"
FT   CHAIN           29..187
FT                   /note="Photosystem I reaction center subunit III"
FT                   /id="PRO_0000207752"
FT   TRANSMEM        107..127
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   187 AA;  21394 MW;  B42A678950C8B0EB CRC64;
     MKSKVLQRFV LCITASLLFW NLNIATHAST LTPCENSAQF QARLNNNIKK LENKLTYYKQ
     NSQEYTSIKQ QIEKTKIRFD KYAKSSLLCG EDGLPHLITD GDWQHSGEFF IPSVLFIYIA
     GWIGWAGKGY LQYSKTLTKP NENEIIIDLP RALKYMFSGF AWPILALKEF KNGSLLASND
     EITTSPR