ID   PSAJ_PHYPA              Reviewed;          41 AA.
AC   Q6YXM2;
DT   21-JUN-2005, integrated into UniProtKB/Swiss-Prot.
DT   05-JUL-2004, sequence version 1.
DT   03-AUG-2022, entry version 73.
DE   RecName: Full=Photosystem I reaction center subunit IX {ECO:0000255|HAMAP-Rule:MF_00522};
DE   AltName: Full=PSI-J {ECO:0000255|HAMAP-Rule:MF_00522};
GN   Name=psaJ {ECO:0000255|HAMAP-Rule:MF_00522};
OS   Physcomitrium patens (Spreading-leaved earth moss) (Physcomitrella patens).
OG   Plastid; Chloroplast.
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Bryophyta;
OC   Bryophytina; Bryopsida; Funariidae; Funariales; Funariaceae; Physcomitrium.
OX   NCBI_TaxID=3218;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=cv. Gransden 2004;
RX   PubMed=12954768; DOI=10.1093/nar/gkg726;
RA   Sugiura C., Kobayashi Y., Setsuyuki A., Sugita C., Sugita M.;
RT   "Complete chloroplast DNA sequence of the moss Physcomitrella patens:
RT   evidence for the loss and relocation of rpoA from the chloroplast to the
RT   nucleus.";
RL   Nucleic Acids Res. 31:5324-5331(2003).
CC   -!- FUNCTION: May help in the organization of the PsaE and PsaF subunits.
CC       {ECO:0000255|HAMAP-Rule:MF_00522}.
CC   -!- SUBCELLULAR LOCATION: Plastid, chloroplast thylakoid membrane
CC       {ECO:0000255|HAMAP-Rule:MF_00522}; Single-pass membrane protein
CC       {ECO:0000255|HAMAP-Rule:MF_00522}.
CC   -!- SIMILARITY: Belongs to the PsaJ family. {ECO:0000255|HAMAP-
CC       Rule:MF_00522}.
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DR   EMBL; AP005672; BAC85030.1; -; Genomic_DNA.
DR   RefSeq; NP_904180.1; NC_005087.1.
DR   PDB; 6L35; EM; 3.23 A; J=1-41.
DR   PDB; 7KSQ; EM; 2.80 A; J=1-41.
DR   PDB; 7KUX; EM; 2.80 A; J=1-41.
DR   PDBsum; 6L35; -.
DR   PDBsum; 7KSQ; -.
DR   PDBsum; 7KUX; -.
DR   AlphaFoldDB; Q6YXM2; -.
DR   SMR; Q6YXM2; -.
DR   GeneID; 2546769; -.
DR   KEGG; ppp:2546769; -.
DR   InParanoid; Q6YXM2; -.
DR   OrthoDB; 1629095at2759; -.
DR   Proteomes; UP000006727; 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; Membrane; Photosynthesis; Photosystem I;
KW   Plastid; Reference proteome; Thylakoid; Transmembrane; Transmembrane helix.
FT   CHAIN           1..41
FT                   /note="Photosystem I reaction center subunit IX"
FT                   /id="PRO_0000207806"
FT   TRANSMEM        7..27
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00522"
FT   HELIX           2..8
FT                   /evidence="ECO:0007829|PDB:6L35"
FT   HELIX           11..32
FT                   /evidence="ECO:0007829|PDB:6L35"
SQ   SEQUENCE   41 AA;  4596 MW;  E1E8060CF3961EFB CRC64;
     MQDVKTYLST APVLATLWFG FLAGLLIEIN RFFPDALVLP L