ID   PSAF_CHLRE              Reviewed;         227 AA.
AC   P12356;
DT   01-OCT-1989, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-1989, sequence version 1.
DT   03-AUG-2022, entry version 119.
DE   RecName: Full=Photosystem I reaction center subunit III, chloroplastic;
DE   AltName: Full=Light-harvesting complex I 17 kDa protein;
DE   AltName: Full=P21 protein;
DE   AltName: Full=PSI-F;
DE   Flags: Precursor;
GN   Name=PSAF;
OS   Chlamydomonas reinhardtii (Chlamydomonas smithii).
OC   Eukaryota; Viridiplantae; Chlorophyta; core chlorophytes; Chlorophyceae;
OC   CS clade; Chlamydomonadales; Chlamydomonadaceae; Chlamydomonas.
OX   NCBI_TaxID=3055;
RN   [1]
RP   NUCLEOTIDE SEQUENCE, AND PARTIAL PROTEIN SEQUENCE.
RC   STRAIN=137c / CC-125;
RA   Franzen L.-G., Frank G., Zuber H., Rochaix J.-D.;
RT   "Isolation and characterization of cDNA clones encoding the 17.9 and 8.1
RT   kDa subunits of photosystem I from Chlamydomonas reinhardtii.";
RL   Plant Mol. Biol. 12:463-474(1989).
RN   [2]
RP   NUCLEOTIDE SEQUENCE.
RC   STRAIN=137C / CW15;
RA   Stevens D.R., Hippler M., Rochaix J.-D., Purton S.;
RT   "Chlamydomonas reinhardtii psaF gene encoding subunit F of photosystem I.";
RL   Submitted (MAR-1999) to the EMBL/GenBank/DDBJ databases.
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   -!- INTERACTION:
CC       P12356; Q39615: psaD; NbExp=2; IntAct=EBI-601814, EBI-601809;
CC   -!- SUBCELLULAR LOCATION: Plastid, chloroplast thylakoid lumen.
CC   -!- SIMILARITY: Belongs to the PsaF family. {ECO:0000305}.
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DR   EMBL; X13495; CAA31849.1; -; mRNA.
DR   EMBL; AF135791; AAD27871.1; -; Genomic_DNA.
DR   PIR; S04133; S04133.
DR   RefSeq; XP_001696798.1; XM_001696746.1.
DR   PDB; 6IJJ; EM; 2.89 A; F=1-227.
DR   PDB; 6IJO; EM; 3.30 A; F=1-227.
DR   PDB; 6JO5; EM; 2.90 A; F=63-227.
DR   PDB; 6JO6; EM; 2.90 A; F=63-227.
DR   PDB; 7BGI; EM; 2.54 A; F=63-227.
DR   PDB; 7BLX; EM; 3.15 A; F=63-227.
DR   PDB; 7D0J; EM; 3.42 A; F=63-227.
DR   PDB; 7DZ7; EM; 2.84 A; F=1-227.
DR   PDB; 7DZ8; EM; 3.16 A; F=1-227.
DR   PDB; 7O01; EM; 17.10 A; F/f=63-227.
DR   PDBsum; 6IJJ; -.
DR   PDBsum; 6IJO; -.
DR   PDBsum; 6JO5; -.
DR   PDBsum; 6JO6; -.
DR   PDBsum; 7BGI; -.
DR   PDBsum; 7BLX; -.
DR   PDBsum; 7D0J; -.
DR   PDBsum; 7DZ7; -.
DR   PDBsum; 7DZ8; -.
DR   PDBsum; 7O01; -.
DR   AlphaFoldDB; P12356; -.
DR   SMR; P12356; -.
DR   DIP; DIP-34986N; -.
DR   IntAct; P12356; 8.
DR   STRING; 3055.EDP00906; -.
DR   ProMEX; P12356; -.
DR   EnsemblPlants; PNW79354; PNW79354; CHLRE_09g412100v5.
DR   GeneID; 5722300; -.
DR   Gramene; PNW79354; PNW79354; CHLRE_09g412100v5.
DR   KEGG; cre:CHLRE_09g412100v5; -.
DR   eggNOG; ENOG502QTZ8; Eukaryota.
DR   HOGENOM; CLU_098828_0_0_1; -.
DR   OMA; TPCSESK; -.
DR   OrthoDB; 1476188at2759; -.
DR   BioCyc; MetaCyc:CHLREDRAFT_130914-MON; -.
DR   GO; GO:0009543; C:chloroplast thylakoid lumen; IEA:UniProtKB-SubCell.
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   1: Evidence at protein level;
KW   3D-structure; Chloroplast; Direct protein sequencing; Photosynthesis;
KW   Photosystem I; Plastid; Thylakoid; Transit peptide.
FT   TRANSIT         1..62
FT                   /note="Chloroplast"
FT   CHAIN           63..227
FT                   /note="Photosystem I reaction center subunit III,
FT                   chloroplastic"
FT                   /id="PRO_0000029343"
FT   VARIANT         167
FT                   /note="G -> D"
FT   HELIX           64..66
FT                   /evidence="ECO:0007829|PDB:7BGI"
FT   TURN            70..72
FT                   /evidence="ECO:0007829|PDB:7BGI"
FT   HELIX           74..91
FT                   /evidence="ECO:0007829|PDB:7BGI"
FT   STRAND          96..98
FT                   /evidence="ECO:0007829|PDB:7BGI"
FT   HELIX           99..120
FT                   /evidence="ECO:0007829|PDB:7BGI"
FT   STRAND          127..129
FT                   /evidence="ECO:0007829|PDB:6JO5"
FT   STRAND          131..133
FT                   /evidence="ECO:0007829|PDB:7BGI"
FT   HELIX           137..142
FT                   /evidence="ECO:0007829|PDB:7BGI"
FT   TURN            146..150
FT                   /evidence="ECO:0007829|PDB:7BGI"
FT   HELIX           151..174
FT                   /evidence="ECO:0007829|PDB:7BGI"
FT   STRAND          176..178
FT                   /evidence="ECO:0007829|PDB:6IJJ"
FT   HELIX           180..185
FT                   /evidence="ECO:0007829|PDB:7BGI"
FT   HELIX           189..198
FT                   /evidence="ECO:0007829|PDB:7BGI"
FT   HELIX           199..201
FT                   /evidence="ECO:0007829|PDB:7BGI"
FT   HELIX           202..211
FT                   /evidence="ECO:0007829|PDB:7BGI"
FT   HELIX           219..221
FT                   /evidence="ECO:0007829|PDB:7BGI"
SQ   SEQUENCE   227 AA;  24057 MW;  DFF1C7B8EC8CB536 CRC64;
     MALTMRNPAV KASSRVAPSS RRALRVACQA QKNETASKVG TALAASALAA AVSLSAPSAA
     MADIAGLTPC SESKAYAKLE KKELKTLEKR LKQYEADSAP AVALKATMER TKARFANYAK
     AGLLCGNDGL PHLIADPGLA LKYGHAGEVF IPTFGFLYVA GYIGYVGRQY LIAVKGEAKP
     TDKEIIIDVP LATKLAWQGA GWPLAAVQEL QRGTLLEKEE NITVSPR