ID   PSAJ_PROMA              Reviewed;          44 AA.
AC   Q9X7I5;
DT   26-SEP-2001, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1999, sequence version 1.
DT   25-MAY-2022, entry version 111.
DE   RecName: Full=Photosystem I reaction center subunit IX;
GN   Name=psaJ; OrderedLocusNames=Pro_0466;
OS   Prochlorococcus marinus (strain SARG / CCMP1375 / SS120).
OC   Bacteria; Cyanobacteria; Synechococcales; Prochlorococcaceae;
OC   Prochlorococcus.
OX   NCBI_TaxID=167539;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   STRAIN=SARG / CCMP1375 / SS120;
RA   van der Staay G.W.M., Partensky F.;
RT   "The 21 kDa protein associated with photosystem I in Prochlorococcus
RT   marinus is the PsaF protein.";
RL   (er) Plant Gene Register PGR99-067(1999).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=SARG / CCMP1375 / SS120;
RX   PubMed=12917486; DOI=10.1073/pnas.1733211100;
RA   Dufresne A., Salanoubat M., Partensky F., Artiguenave F., Axmann I.M.,
RA   Barbe V., Duprat S., Galperin M.Y., Koonin E.V., Le Gall F., Makarova K.S.,
RA   Ostrowski M., Oztas S., Robert C., Rogozin I.B., Scanlan D.J.,
RA   Tandeau de Marsac N., Weissenbach J., Wincker P., Wolf Y.I., Hess W.R.;
RT   "Genome sequence of the cyanobacterium Prochlorococcus marinus SS120, a
RT   nearly minimal oxyphototrophic genome.";
RL   Proc. Natl. Acad. Sci. U.S.A. 100:10020-10025(2003).
CC   -!- FUNCTION: May help in the organization of the PsaE and PsaF subunits.
CC       {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Cellular thylakoid membrane {ECO:0000250};
CC       Single-pass membrane protein {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the PsaJ family. {ECO:0000305}.
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DR   EMBL; AJ131438; CAB41404.1; -; Genomic_DNA.
DR   EMBL; AE017126; AAP99511.1; -; Genomic_DNA.
DR   RefSeq; NP_874859.1; NC_005042.1.
DR   RefSeq; WP_011124621.1; NC_005042.1.
DR   AlphaFoldDB; Q9X7I5; -.
DR   SMR; Q9X7I5; -.
DR   STRING; 167539.Pro_0466; -.
DR   EnsemblBacteria; AAP99511; AAP99511; Pro_0466.
DR   GeneID; 54199834; -.
DR   KEGG; pma:Pro_0466; -.
DR   PATRIC; fig|167539.5.peg.479; -.
DR   eggNOG; ENOG5033A5A; Bacteria.
DR   HOGENOM; CLU_212133_1_1_3; -.
DR   OrthoDB; 2064773at2; -.
DR   Proteomes; UP000001420; Chromosome.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   GO; GO:0009522; C:photosystem I; IEA:UniProtKB-KW.
DR   GO; GO:0031676; C:plasma membrane-derived thylakoid membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0015979; P:photosynthesis; IEA:UniProtKB-UniRule.
DR   HAMAP; MF_00522; PSI_PsaJ; 1.
DR   InterPro; IPR002615; PSI_PsaJ.
DR   InterPro; IPR036062; PSI_PsaJ_sf.
DR   Pfam; PF01701; PSI_PsaJ; 1.
DR   SUPFAM; SSF81544; SSF81544; 1.
PE   3: Inferred from homology;
KW   Membrane; Photosynthesis; Photosystem I; Reference proteome; Thylakoid;
KW   Transmembrane; Transmembrane helix.
FT   CHAIN           1..44
FT                   /note="Photosystem I reaction center subunit IX"
FT                   /id="PRO_0000207822"
FT   TRANSMEM        9..29
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   44 AA;  5118 MW;  17C4096354EF8AEE CRC64;
     MFKIFSTKWF RSAPVVATIW IVITAGILVE WNRFVPDLLF HPGL