ID   PSAF_GLOVI              Reviewed;         181 AA.
AC   Q7NH05;
DT   05-JUL-2005, integrated into UniProtKB/Swiss-Prot.
DT   15-DEC-2003, sequence version 1.
DT   03-AUG-2022, entry version 85.
DE   RecName: Full=Photosystem I reaction center subunit III;
DE   AltName: Full=PSI-F;
DE   Flags: Precursor;
GN   Name=psaF; OrderedLocusNames=glr2732;
OS   Gloeobacter violaceus (strain ATCC 29082 / PCC 7421).
OC   Bacteria; Cyanobacteria; Gloeobacteria; Gloeobacterales; Gloeobacteraceae;
OC   Gloeobacter.
OX   NCBI_TaxID=251221;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 29082 / PCC 7421;
RX   PubMed=14621292; DOI=10.1093/dnares/10.4.137;
RA   Nakamura Y., Kaneko T., Sato S., Mimuro M., Miyashita H., Tsuchiya T.,
RA   Sasamoto S., Watanabe A., Kawashima K., Kishida Y., Kiyokawa C., Kohara M.,
RA   Matsumoto M., Matsuno A., Nakazaki N., Shimpo S., Takeuchi C., Yamada M.,
RA   Tabata S.;
RT   "Complete genome structure of Gloeobacter violaceus PCC 7421, a
RT   cyanobacterium that lacks thylakoids.";
RL   DNA Res. 10:137-145(2003).
RN   [2]
RP   IDENTIFICATION BY MASS SPECTROMETRY, AND CHARACTERIZATION OF PHOTOSYSTEM I.
RC   STRAIN=ATCC 29082 / PCC 7421;
RX   PubMed=15589832; DOI=10.1016/j.febslet.2004.11.013;
RA   Inoue H., Tsuchiya T., Satoh S., Miyashita H., Kaneko T., Tabata S.,
RA   Tanaka A., Mimuro M.;
RT   "Unique constitution of photosystem I with a novel subunit in the
RT   cyanobacterium Gloeobacter violaceus PCC 7421.";
RL   FEBS Lett. 578:275-279(2004).
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 with PSI.
CC   -!- SUBUNIT: The G.violaceus PSI reaction center is composed of one copy
CC       each of PsaA,B,C,D,E,F,L,M and Z, and forms trimeric complexes.
CC   -!- SUBCELLULAR LOCATION: Cell inner membrane. Note=The soluble domain is
CC       associated with the lumenal side of the cytoplasmic membrane.
CC   -!- SIMILARITY: Belongs to the PsaF family. {ECO:0000305}.
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DR   EMBL; BA000045; BAC90673.1; -; Genomic_DNA.
DR   RefSeq; NP_925678.1; NC_005125.1.
DR   RefSeq; WP_011142726.1; NC_005125.1.
DR   PDB; 7F4V; EM; 2.04 A; aF/bF/cF=1-181.
DR   PDBsum; 7F4V; -.
DR   AlphaFoldDB; Q7NH05; -.
DR   SMR; Q7NH05; -.
DR   STRING; 251221.35213301; -.
DR   EnsemblBacteria; BAC90673; BAC90673; BAC90673.
DR   KEGG; gvi:glr2732; -.
DR   PATRIC; fig|251221.4.peg.2760; -.
DR   eggNOG; ENOG502ZBQN; Bacteria.
DR   HOGENOM; CLU_098828_1_0_3; -.
DR   InParanoid; Q7NH05; -.
DR   OrthoDB; 1442323at2; -.
DR   PhylomeDB; Q7NH05; -.
DR   Proteomes; UP000000557; 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:0005886; C:plasma 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   1: Evidence at protein level;
KW   3D-structure; Cell inner membrane; Cell membrane; Membrane; Photosynthesis;
KW   Photosystem I; Reference proteome; Signal; Transmembrane;
KW   Transmembrane helix.
FT   SIGNAL          1..30
FT                   /evidence="ECO:0000255"
FT   CHAIN           31..181
FT                   /note="Photosystem I reaction center subunit III"
FT                   /id="PRO_0000029347"
FT   TRANSMEM        104..124
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   181 AA;  19909 MW;  9709FD2050C2E2C7 CRC64;
     MSNKQSRVPF GAALLGILTL LLLFETGAFA QTQVKDPLKL CKDVPAYQEL KTQRLEAAQK
     AQADGKPVTF NEAGTKQKFE RYDTAYCGQD GYPHLITSGQ LDRAGDFLIP SVLFLWIAGA
     LGWAGRLYLA ESKGPEDEII IDLPKAIKCL LLGLIWPVQA IPELISGKIR VPEDRVTISP
     R