ID   PSAJ_PROM0              Reviewed;          44 AA.
AC   A3PBJ1;
DT   15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT   03-APR-2007, sequence version 1.
DT   25-MAY-2022, entry version 82.
DE   RecName: Full=Photosystem I reaction center subunit IX {ECO:0000255|HAMAP-Rule:MF_00522};
GN   Name=psaJ {ECO:0000255|HAMAP-Rule:MF_00522}; OrderedLocusNames=P9301_04931;
OS   Prochlorococcus marinus (strain MIT 9301).
OC   Bacteria; Cyanobacteria; Synechococcales; Prochlorococcaceae;
OC   Prochlorococcus.
OX   NCBI_TaxID=167546;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=MIT 9301;
RX   PubMed=18159947; DOI=10.1371/journal.pgen.0030231;
RA   Kettler G.C., Martiny A.C., Huang K., Zucker J., Coleman M.L., Rodrigue S.,
RA   Chen F., Lapidus A., Ferriera S., Johnson J., Steglich C., Church G.M.,
RA   Richardson P., Chisholm S.W.;
RT   "Patterns and implications of gene gain and loss in the evolution of
RT   Prochlorococcus.";
RL   PLoS Genet. 3:2515-2528(2007).
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}.
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DR   EMBL; CP000576; ABO17116.1; -; Genomic_DNA.
DR   RefSeq; WP_011862490.1; NC_009091.1.
DR   AlphaFoldDB; A3PBJ1; -.
DR   SMR; A3PBJ1; -.
DR   STRING; 167546.P9301_04931; -.
DR   EnsemblBacteria; ABO17116; ABO17116; P9301_04931.
DR   KEGG; pmg:P9301_04931; -.
DR   HOGENOM; CLU_212133_1_1_3; -.
DR   Proteomes; UP000001430; 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   3: Inferred from homology;
KW   Membrane; Photosynthesis; Photosystem I; Reference proteome; Thylakoid;
KW   Transmembrane; Transmembrane helix.
FT   CHAIN           1..44
FT                   /note="Photosystem I reaction center subunit IX"
FT                   /id="PRO_1000050917"
FT   TRANSMEM        9..29
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00522"
SQ   SEQUENCE   44 AA;  5053 MW;  EA668598A04D8F16 CRC64;
     MFKILNTKFV RSAPVVAAIW LSLTAGIIIE FNRFFPDLLF HPMS