ID   PSAI_SYNEL              Reviewed;          38 AA.
AC   P0A428; P25900;
DT   15-MAR-2005, integrated into UniProtKB/Swiss-Prot.
DT   15-MAR-2005, sequence version 1.
DT   25-MAY-2022, entry version 67.
DE   RecName: Full=Photosystem I reaction center subunit VIII;
GN   Name=psaI;
OS   Synechococcus elongatus.
OC   Bacteria; Cyanobacteria; Synechococcales; Synechococcaceae; Synechococcus.
OX   NCBI_TaxID=32046;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=8486290; DOI=10.1016/0378-1119(93)90618-d;
RA   Muehlenhoff U., Haehnel W., Witt H.T., Herrmann R.G.;
RT   "Genes encoding eleven subunits of photosystem I from the thermophilic
RT   cyanobacterium Synechococcus sp.";
RL   Gene 127:71-78(1993).
CC   -!- FUNCTION: May help in the organization of the PsaL subunit.
CC       {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Cellular thylakoid membrane {ECO:0000250};
CC       Single-pass membrane protein {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the PsaI family. {ECO:0000305}.
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DR   EMBL; X63763; CAA45297.1; -; Genomic_DNA.
DR   AlphaFoldDB; P0A428; -.
DR   SMR; P0A428; -.
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_00431; PSI_PsaI; 1.
DR   InterPro; IPR001302; PSI_PsaI.
DR   InterPro; IPR036357; PSI_PsaI_sf.
DR   Pfam; PF00796; PSI_8; 1.
DR   SUPFAM; SSF81540; SSF81540; 1.
DR   TIGRFAMs; TIGR03052; PS_I_psaI; 1.
PE   3: Inferred from homology;
KW   Membrane; Photosynthesis; Photosystem I; Thylakoid; Transmembrane;
KW   Transmembrane helix.
FT   CHAIN           1..38
FT                   /note="Photosystem I reaction center subunit VIII"
FT                   /id="PRO_0000194683"
FT   TRANSMEM        12..32
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   38 AA;  4297 MW;  E9B0178560DE5CF5 CRC64;
     MMGSYAASFL PWIFIPVVCW LMPTVVMGLL FLYIEGEA