ID   PSAJ_SYNE7              Reviewed;          41 AA.
AC   Q31NU0;
DT   12-DEC-2006, integrated into UniProtKB/Swiss-Prot.
DT   12-DEC-2006, sequence version 2.
DT   03-AUG-2022, entry version 87.
DE   RecName: Full=Photosystem I reaction center subunit IX {ECO:0000255|HAMAP-Rule:MF_00522};
GN   Name=psaJ {ECO:0000255|HAMAP-Rule:MF_00522};
GN   OrderedLocusNames=Synpcc7942_1249;
OS   Synechococcus elongatus (strain PCC 7942 / FACHB-805) (Anacystis nidulans
OS   R2).
OC   Bacteria; Cyanobacteria; Synechococcales; Synechococcaceae; Synechococcus.
OX   NCBI_TaxID=1140;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=PCC 7942 / FACHB-805;
RG   US DOE Joint Genome Institute;
RA   Copeland A., Lucas S., Lapidus A., Barry K., Detter J.C., Glavina T.,
RA   Hammon N., Israni S., Pitluck S., Schmutz J., Larimer F., Land M.,
RA   Kyrpides N., Lykidis A., Richardson P.;
RT   "Complete sequence of chromosome 1 of Synechococcus elongatus PCC 7942.";
RL   Submitted (AUG-2005) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: May help in the organization of the PsaE and PsaF subunits.
CC       {ECO:0000255|HAMAP-Rule:MF_00522}.
CC   -!- SUBCELLULAR LOCATION: Cellular thylakoid membrane {ECO:0000255|HAMAP-
CC       Rule:MF_00522}; Single-pass membrane protein {ECO:0000255|HAMAP-
CC       Rule:MF_00522}.
CC   -!- SIMILARITY: Belongs to the PsaJ family. {ECO:0000255|HAMAP-
CC       Rule:MF_00522}.
CC   -!- SEQUENCE CAUTION:
CC       Sequence=ABB57279.1; Type=Erroneous initiation; Evidence={ECO:0000305};
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DR   EMBL; CP000100; ABB57279.1; ALT_INIT; Genomic_DNA.
DR   PDB; 6KIF; EM; 3.30 A; J/T/l=1-41.
DR   PDB; 6KIG; EM; 2.90 A; J/T/l=1-41.
DR   PDBsum; 6KIF; -.
DR   PDBsum; 6KIG; -.
DR   AlphaFoldDB; Q31NU0; -.
DR   SMR; Q31NU0; -.
DR   STRING; 1140.Synpcc7942_1249; -.
DR   PRIDE; Q31NU0; -.
DR   EnsemblBacteria; ABB57279; ABB57279; Synpcc7942_1249.
DR   KEGG; syf:Synpcc7942_1249; -.
DR   eggNOG; ENOG5033A5A; Bacteria.
DR   HOGENOM; CLU_212133_1_1_3; -.
DR   BioCyc; MetaCyc:SYNPCC7942_1249-MON; -.
DR   BioCyc; SYNEL:SYNPCC7942_1249-MON; -.
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   PANTHER; PTHR36082; PTHR36082; 1.
DR   Pfam; PF01701; PSI_PsaJ; 1.
DR   SUPFAM; SSF81544; SSF81544; 1.
PE   1: Evidence at protein level;
KW   3D-structure; Membrane; Photosynthesis; Photosystem I; Thylakoid;
KW   Transmembrane; Transmembrane helix.
FT   CHAIN           1..41
FT                   /note="Photosystem I reaction center subunit IX"
FT                   /id="PRO_0000268764"
FT   TRANSMEM        7..27
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00522"
SQ   SEQUENCE   41 AA;  4710 MW;  EE74E4C17C8A1777 CRC64;
     MDGLKRYLSS APILATIWFA ITAGILIEFN RFFPDLLFHP L