ID   PSAI_PROMA              Reviewed;          38 AA.
AC   O87786;
DT   26-SEP-2001, integrated into UniProtKB/Swiss-Prot.
DT   26-SEP-2001, sequence version 2.
DT   25-MAY-2022, entry version 101.
DE   RecName: Full=Photosystem I reaction center subunit VIII;
GN   Name=psaI; OrderedLocusNames=Pro_1678;
OS   Prochlorococcus marinus (strain SARG / CCMP1375 / SS120).
OC   Bacteria; Cyanobacteria; Synechococcales; Prochlorococcaceae;
OC   Prochlorococcus.
OX   NCBI_TaxID=167539;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   STRAIN=SARG / CCMP1375 / SS120;
RA   van der Staay G.W.M., Moon-van der Staay S.Y., Garczarek L., Partensky F.;
RT   "Characterization of the photosystem I subunits PsaI and PsaL from two
RT   strains of the marine oxyphototrophic.";
RL   Photosyn. Res. 57:183-191(1998).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=SARG / CCMP1375 / SS120;
RX   PubMed=12917486; DOI=10.1073/pnas.1733211100;
RA   Dufresne A., Salanoubat M., Partensky F., Artiguenave F., Axmann I.M.,
RA   Barbe V., Duprat S., Galperin M.Y., Koonin E.V., Le Gall F., Makarova K.S.,
RA   Ostrowski M., Oztas S., Robert C., Rogozin I.B., Scanlan D.J.,
RA   Tandeau de Marsac N., Weissenbach J., Wincker P., Wolf Y.I., Hess W.R.;
RT   "Genome sequence of the cyanobacterium Prochlorococcus marinus SS120, a
RT   nearly minimal oxyphototrophic genome.";
RL   Proc. Natl. Acad. Sci. U.S.A. 100:10020-10025(2003).
CC   -!- FUNCTION: May help in the organization of the PsaL subunit.
CC   -!- SUBCELLULAR LOCATION: Cellular thylakoid membrane {ECO:0000250};
CC       Single-pass membrane protein {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the PsaI family. {ECO:0000305}.
CC   -!- SEQUENCE CAUTION:
CC       Sequence=CAB11178.1; Type=Erroneous initiation; Evidence={ECO:0000305};
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DR   EMBL; Z98594; CAB11178.1; ALT_INIT; Genomic_DNA.
DR   EMBL; AE017126; AAQ00722.1; -; Genomic_DNA.
DR   RefSeq; NP_876069.1; NC_005042.1.
DR   RefSeq; WP_011125827.1; NC_005042.1.
DR   AlphaFoldDB; O87786; -.
DR   SMR; O87786; -.
DR   STRING; 167539.Pro_1678; -.
DR   EnsemblBacteria; AAQ00722; AAQ00722; Pro_1678.
DR   GeneID; 54201003; -.
DR   KEGG; pma:Pro_1678; -.
DR   PATRIC; fig|167539.5.peg.1772; -.
DR   HOGENOM; CLU_215282_2_0_3; -.
DR   OrthoDB; 2080297at2; -.
DR   Proteomes; UP000001420; 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-KW.
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; Reference proteome; Thylakoid;
KW   Transmembrane; Transmembrane helix.
FT   CHAIN           1..38
FT                   /note="Photosystem I reaction center subunit VIII"
FT                   /id="PRO_0000194681"
FT   TRANSMEM        12..32
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   38 AA;  4081 MW;  19DECDABA650A2F2 CRC64;
     MSSEFAATWL PAVFVPLIGL VTPAVFIVLI GRYITATD