ID   PSAJ_SPIOL              Reviewed;          44 AA.
AC   P17230; Q9M3K9;
DT   01-AUG-1990, integrated into UniProtKB/Swiss-Prot.
DT   29-AUG-2001, sequence version 2.
DT   25-MAY-2022, entry version 100.
DE   RecName: Full=Photosystem I reaction center subunit IX;
DE   AltName: Full=PSI-J;
GN   Name=psaJ;
OS   Spinacia oleracea (Spinach).
OG   Plastid; Chloroplast.
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae;
OC   Caryophyllales; Chenopodiaceae; Chenopodioideae; Anserineae; Spinacia.
OX   NCBI_TaxID=3562;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=cv. Geant d'hiver, and cv. Monatol;
RX   PubMed=11292076; DOI=10.1023/a:1006478403810;
RA   Schmitz-Linneweber C., Maier R.M., Alcaraz J.-P., Cottet A., Herrmann R.G.,
RA   Mache R.;
RT   "The plastid chromosome of spinach (Spinacia oleracea): complete nucleotide
RT   sequence and gene organization.";
RL   Plant Mol. Biol. 45:307-315(2001).
RN   [2]
RP   PROTEIN SEQUENCE OF 1-16.
RX   PubMed=2185953; DOI=10.1016/0014-5793(90)81391-z;
RA   Ikeuchi M., Hirano A., Hiyama T., Inoue Y.;
RT   "Polypeptide composition of higher plant photosystem I complex.
RT   Identification of psaI, psaJ and psaK gene products.";
RL   FEBS Lett. 263:274-278(1990).
CC   -!- FUNCTION: May help in the organization of the PsaE and PsaF subunits.
CC   -!- SUBCELLULAR LOCATION: Plastid, chloroplast thylakoid membrane
CC       {ECO:0000250}; Single-pass membrane protein {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the PsaJ family. {ECO:0000305}.
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DR   EMBL; AJ400848; CAB88748.1; -; Genomic_DNA.
DR   PIR; S09732; S09732.
DR   RefSeq; NP_054955.1; NC_002202.1.
DR   PDB; 2O01; X-ray; 3.40 A; J=1-42.
DR   PDB; 2WSC; X-ray; 3.30 A; J=1-44.
DR   PDB; 2WSE; X-ray; 3.49 A; J=1-44.
DR   PDB; 2WSF; X-ray; 3.48 A; J=1-44.
DR   PDBsum; 2O01; -.
DR   PDBsum; 2WSC; -.
DR   PDBsum; 2WSE; -.
DR   PDBsum; 2WSF; -.
DR   AlphaFoldDB; P17230; -.
DR   SMR; P17230; -.
DR   STRING; 3562.P17230; -.
DR   GeneID; 2715606; -.
DR   KEGG; soe:2715606; -.
DR   OrthoDB; 1629095at2759; -.
DR   EvolutionaryTrace; P17230; -.
DR   Proteomes; UP000054095; Chloroplast.
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:0009522; C:photosystem I; IEA:UniProtKB-KW.
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   PANTHER; PTHR36082; PTHR36082; 1.
DR   Pfam; PF01701; PSI_PsaJ; 1.
DR   SUPFAM; SSF81544; SSF81544; 1.
PE   1: Evidence at protein level;
KW   3D-structure; Chloroplast; Direct protein sequencing; Membrane;
KW   Photosynthesis; Photosystem I; Plastid; Reference proteome; Thylakoid;
KW   Transmembrane; Transmembrane helix.
FT   CHAIN           1..44
FT                   /note="Photosystem I reaction center subunit IX"
FT                   /id="PRO_0000207816"
FT   TRANSMEM        7..27
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   HELIX           15..17
FT                   /evidence="ECO:0007829|PDB:2WSC"
FT   TURN            18..21
FT                   /evidence="ECO:0007829|PDB:2WSC"
FT   HELIX           22..24
FT                   /evidence="ECO:0007829|PDB:2WSC"
FT   STRAND          27..29
FT                   /evidence="ECO:0007829|PDB:2WSC"
FT   TURN            30..32
FT                   /evidence="ECO:0007829|PDB:2WSC"
SQ   SEQUENCE   44 AA;  5077 MW;  BB375EEAF244CEBA CRC64;
     MRDFKTYLSV APVLSTLWFG SLAGLLIEIN RFFPDALTFP FFSF