ID   PSAJ_SYNY3              Reviewed;          40 AA.
AC   Q55329;
DT   01-NOV-1997, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1996, sequence version 1.
DT   03-AUG-2022, entry version 129.
DE   RecName: Full=Photosystem I reaction center subunit IX;
GN   Name=psaJ; OrderedLocusNames=sml0008;
OS   Synechocystis sp. (strain PCC 6803 / Kazusa).
OC   Bacteria; Cyanobacteria; Synechococcales; Merismopediaceae; Synechocystis;
OC   unclassified Synechocystis.
OX   NCBI_TaxID=1111708;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RA   Xu Q., Yu L., Chitnis V.P., Chitnis P.R.;
RL   Submitted (JUL-1993) to the EMBL/GenBank/DDBJ databases.
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=PCC 6803 / Kazusa;
RX   PubMed=8905231; DOI=10.1093/dnares/3.3.109;
RA   Kaneko T., Sato S., Kotani H., Tanaka A., Asamizu E., Nakamura Y.,
RA   Miyajima N., Hirosawa M., Sugiura M., Sasamoto S., Kimura T., Hosouchi T.,
RA   Matsuno A., Muraki A., Nakazaki N., Naruo K., Okumura S., Shimpo S.,
RA   Takeuchi C., Wada T., Watanabe A., Yamada M., Yasuda M., Tabata S.;
RT   "Sequence analysis of the genome of the unicellular cyanobacterium
RT   Synechocystis sp. strain PCC6803. II. Sequence determination of the entire
RT   genome and assignment of potential protein-coding regions.";
RL   DNA Res. 3:109-136(1996).
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; L20938; AAA27295.1; -; Genomic_DNA.
DR   EMBL; BA000022; BAA18107.1; -; Genomic_DNA.
DR   PIR; S75546; S75546.
DR   PDB; 4KT0; X-ray; 2.80 A; J=1-40.
DR   PDB; 4L6V; X-ray; 3.80 A; 6/F/f=1-40.
DR   PDB; 5OY0; X-ray; 2.50 A; 7/J/j=1-40.
DR   PDB; 6HQB; X-ray; 4.00 A; J=1-40.
DR   PDB; 6NWA; EM; 3.48 A; J/S/j=1-40.
DR   PDB; 6UZV; EM; 3.10 A; 7/J/j=1-40.
DR   PDBsum; 4KT0; -.
DR   PDBsum; 4L6V; -.
DR   PDBsum; 5OY0; -.
DR   PDBsum; 6HQB; -.
DR   PDBsum; 6NWA; -.
DR   PDBsum; 6UZV; -.
DR   AlphaFoldDB; Q55329; -.
DR   SMR; Q55329; -.
DR   IntAct; Q55329; 1.
DR   STRING; 1148.1653191; -.
DR   PaxDb; Q55329; -.
DR   EnsemblBacteria; BAA18107; BAA18107; BAA18107.
DR   KEGG; syn:sml0008; -.
DR   eggNOG; ENOG5033A5A; Bacteria.
DR   InParanoid; Q55329; -.
DR   BioCyc; MetaCyc:PSAJ-MON; -.
DR   Proteomes; UP000001425; 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   1: Evidence at protein level;
KW   3D-structure; Membrane; Photosynthesis; Photosystem I; Reference proteome;
KW   Thylakoid; Transmembrane; Transmembrane helix.
FT   CHAIN           1..40
FT                   /note="Photosystem I reaction center subunit IX"
FT                   /id="PRO_0000207828"
FT   TRANSMEM        7..27
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   HELIX           2..8
FT                   /evidence="ECO:0007829|PDB:5OY0"
FT   HELIX           11..32
FT                   /evidence="ECO:0007829|PDB:5OY0"
SQ   SEQUENCE   40 AA;  4532 MW;  51F670612094BCE1 CRC64;
     MDGLKSFLST APVMIMALLT FTAGILIEFN RFYPDLLFHP