ID   PSAK_SYNPW              Reviewed;          85 AA.
AC   A5GL35;
DT   15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT   12-JUN-2007, sequence version 1.
DT   25-MAY-2022, entry version 75.
DE   RecName: Full=Photosystem I reaction center subunit PsaK {ECO:0000255|HAMAP-Rule:MF_00474};
DE   AltName: Full=Photosystem I subunit X {ECO:0000255|HAMAP-Rule:MF_00474};
GN   Name=psaK {ECO:0000255|HAMAP-Rule:MF_00474};
GN   OrderedLocusNames=SynWH7803_1224;
OS   Synechococcus sp. (strain WH7803).
OC   Bacteria; Cyanobacteria; Synechococcales; Synechococcaceae; Synechococcus;
OC   unclassified Synechococcus.
OX   NCBI_TaxID=32051;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=WH7803;
RG   Genoscope;
RL   Submitted (MAY-2006) to the EMBL/GenBank/DDBJ databases.
CC   -!- SUBCELLULAR LOCATION: Cellular thylakoid membrane {ECO:0000255|HAMAP-
CC       Rule:MF_00474}; Multi-pass membrane protein {ECO:0000255|HAMAP-
CC       Rule:MF_00474}.
CC   -!- SIMILARITY: Belongs to the PsaG/PsaK family. {ECO:0000255|HAMAP-
CC       Rule:MF_00474}.
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DR   EMBL; CT971583; CAK23650.1; -; Genomic_DNA.
DR   RefSeq; WP_011933131.1; NC_009481.1.
DR   AlphaFoldDB; A5GL35; -.
DR   SMR; A5GL35; -.
DR   STRING; 32051.SynWH7803_1224; -.
DR   EnsemblBacteria; CAK23650; CAK23650; SynWH7803_1224.
DR   KEGG; syx:SynWH7803_1224; -.
DR   eggNOG; ENOG5032YIH; Bacteria.
DR   HOGENOM; CLU_160496_0_0_3; -.
DR   OMA; ANCLGHI; -.
DR   OrthoDB; 2053688at2; -.
DR   Proteomes; UP000001566; 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   Gene3D; 1.20.860.20; -; 1.
DR   HAMAP; MF_00474; PSI_PsaK; 1.
DR   InterPro; IPR035982; PSI_centre_PsaK_sf.
DR   InterPro; IPR000549; PSI_PsaG/PsaK.
DR   InterPro; IPR017492; PSI_PsaK.
DR   InterPro; IPR037101; PSI_PsaK_bact.
DR   Pfam; PF01241; PSI_PSAK; 1.
DR   SUPFAM; SSF81563; SSF81563; 1.
DR   TIGRFAMs; TIGR03049; PS_I_psaK; 1.
DR   PROSITE; PS01026; PHOTOSYSTEM_I_PSAGK; 1.
PE   3: Inferred from homology;
KW   Membrane; Photosynthesis; Photosystem I; Reference proteome; Thylakoid;
KW   Transmembrane; Transmembrane helix.
FT   CHAIN           1..85
FT                   /note="Photosystem I reaction center subunit PsaK"
FT                   /id="PRO_1000014035"
FT   TRANSMEM        13..33
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00474"
FT   TRANSMEM        59..79
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00474"
SQ   SEQUENCE   85 AA;  8746 MW;  C09A30E32380A047 CRC64;
     MFLSLLAITP ASVSWTPKVA LVMIICNVIA IAIGKATIKY PNEGAKMPSA SFFGGMSHGA
     MLGCTSFGHL LGMGAILGLS TRGVF