ID   PSAJ_CYAPA              Reviewed;          40 AA.
AC   P48117;
DT   01-FEB-1996, integrated into UniProtKB/Swiss-Prot.
DT   01-FEB-1996, sequence version 1.
DT   03-AUG-2022, entry version 78.
DE   RecName: Full=Photosystem I reaction center subunit IX;
DE   AltName: Full=PSI-J;
GN   Name=psaJ;
OS   Cyanophora paradoxa.
OG   Plastid; Cyanelle.
OC   Eukaryota; Glaucocystophyceae; Cyanophoraceae; Cyanophora.
OX   NCBI_TaxID=2762;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=UTEX LB 555 / Pringsheim;
RA   Stirewalt V.L., Michalowski C.B., Loeffelhardt W., Bohnert H.J.,
RA   Bryant D.A.;
RT   "Nucleotide sequence of the cyanelle DNA from Cyanophora paradoxa.";
RL   Plant Mol. Biol. Rep. 13:327-332(1995).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=UTEX LB 555 / Pringsheim;
RA   Loeffelhardt W., Stirewalt V.L., Michalowski C.B., Annarella M.,
RA   Farley J.Y., Schluchter W.M., Chung S., Newmann-Spallart C., Steiner J.M.,
RA   Jakowitsch J., Bohnert H.J., Bryant D.A.;
RT   "The complete sequence of the cyanelle genome of Cyanophora paradoxa: the
RT   genetic complexity of a primitive plastid.";
RL   (In) Schenk H.E.A., Herrmann R., Jeon K.W., Mueller N.E., Schwemmler W.
RL   (eds.);
RL   Eukaryotism and symbiosis, pp.40-48, Springer-Verlag, Heidelberg (1997).
CC   -!- FUNCTION: May help in the organization of the PsaE and PsaF subunits.
CC   -!- SUBCELLULAR LOCATION: Plastid, cyanelle 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; U30821; AAA81183.1; -; Genomic_DNA.
DR   PIR; T06840; T06840.
DR   RefSeq; NP_043152.1; NC_001675.1.
DR   PDB; 7DR0; EM; 3.30 A; J=1-40.
DR   PDB; 7DR1; EM; 3.20 A; J=1-40.
DR   PDB; 7DR2; EM; 3.80 A; aJ/bJ/cJ/dJ=1-40.
DR   PDBsum; 7DR0; -.
DR   PDBsum; 7DR1; -.
DR   PDBsum; 7DR2; -.
DR   AlphaFoldDB; P48117; -.
DR   SMR; P48117; -.
DR   GeneID; 801577; -.
DR   GO; GO:0033115; C:cyanelle 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   Pfam; PF01701; PSI_PsaJ; 1.
DR   SUPFAM; SSF81544; SSF81544; 1.
PE   1: Evidence at protein level;
KW   3D-structure; Cyanelle; Membrane; Photosynthesis; Photosystem I; Plastid;
KW   Thylakoid; Transmembrane; Transmembrane helix.
FT   CHAIN           1..40
FT                   /note="Photosystem I reaction center subunit IX"
FT                   /id="PRO_0000207788"
FT   TRANSMEM        6..26
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   40 AA;  4481 MW;  798A8CA36A007153 CRC64;
     MSFSKYLSTA PVIGTLTAFF LAGLLIEINR FNPDLLVYPF