ID   PSAF_TRIV2              Reviewed;         164 AA.
AC   P31091; Q3MD35; Q44552;
DT   01-JUL-1993, integrated into UniProtKB/Swiss-Prot.
DT   01-DEC-2000, sequence version 2.
DT   25-MAY-2022, entry version 113.
DE   RecName: Full=Photosystem I reaction center subunit III;
DE   AltName: Full=PSI-F;
DE   Flags: Precursor;
GN   Name=psaF; OrderedLocusNames=Ava_1478;
OS   Trichormus variabilis (strain ATCC 29413 / PCC 7937) (Anabaena variabilis).
OC   Bacteria; Cyanobacteria; Nostocales; Nostocaceae; Trichormus.
OX   NCBI_TaxID=240292;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RA   Ziegler K., Schuetz M., Zimmermann R., Lockau W.;
RL   Submitted (DEC-1995) to the EMBL/GenBank/DDBJ databases.
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 29413 / PCC 7937;
RX   PubMed=25197444; DOI=10.4056/sigs.3899418;
RA   Thiel T., Pratte B.S., Zhong J., Goodwin L., Copeland A., Lucas S., Han C.,
RA   Pitluck S., Land M.L., Kyrpides N.C., Woyke T.;
RT   "Complete genome sequence of Anabaena variabilis ATCC 29413.";
RL   Stand. Genomic Sci. 9:562-573(2014).
RN   [3]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA] OF 24-62.
RX   PubMed=1618755; DOI=10.1016/s0021-9258(18)42303-4;
RA   Nyhus K.J., Ikeuchi M., Inoue Y., Whitmarsh J., Pakrasi H.B.;
RT   "Purification and characterization of the photosystem I complex from the
RT   filamentous cyanobacterium Anabaena variabilis ATCC 29413.";
RL   J. Biol. Chem. 267:12489-12495(1992).
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: Cellular thylakoid membrane {ECO:0000250}; Multi-
CC       pass membrane protein {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the PsaF family. {ECO:0000305}.
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DR   EMBL; X93923; CAA63816.1; -; Genomic_DNA.
DR   EMBL; CP000117; ABA21101.1; -; Genomic_DNA.
DR   PIR; E42799; E42799.
DR   AlphaFoldDB; P31091; -.
DR   SMR; P31091; -.
DR   STRING; 240292.Ava_1478; -.
DR   EnsemblBacteria; ABA21101; ABA21101; Ava_1478.
DR   KEGG; ava:Ava_1478; -.
DR   eggNOG; ENOG502ZBQN; Bacteria.
DR   HOGENOM; CLU_098828_1_0_3; -.
DR   OMA; LIVDGRW; -.
DR   Proteomes; UP000002533; Chromosome.
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:0031676; C:plasma membrane-derived thylakoid membrane; IEA:UniProtKB-SubCell.
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   Membrane; Photosynthesis; Photosystem I; Signal; Thylakoid; Transmembrane;
KW   Transmembrane helix.
FT   SIGNAL          1..23
FT   CHAIN           24..164
FT                   /note="Photosystem I reaction center subunit III"
FT                   /id="PRO_0000029349"
FT   TRANSMEM        83..103
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        124..144
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   164 AA;  17833 MW;  95BBAC618ECEACCA CRC64;
     MRRLFALILV ICLSFSFAPP AKALGADLTP CAENPAFQAL AKNARNTTAD PQSGQKRFER
     YSQALCGPEG YPHLIVDGRL DRAGDFLIPS ILFLYIAGWI GWVGRAYLQA IKKDSDTEQK
     EIQLDLGLAL PIIATGFAWP AAAVKELLSG ELTAKDSEIT VSPR