ID   PSAK_GRATL              Reviewed;          86 AA.
AC   Q6B8M4;
DT   21-JUN-2005, integrated into UniProtKB/Swiss-Prot.
DT   13-SEP-2004, sequence version 1.
DT   25-MAY-2022, entry version 59.
DE   RecName: Full=Photosystem I reaction center subunit PsaK {ECO:0000255|HAMAP-Rule:MF_00474};
DE   AltName: Full=PSI-K {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}; OrderedLocusNames=Grc000180;
OS   Gracilaria tenuistipitata var. liui (Red alga).
OG   Plastid; Chloroplast.
OC   Eukaryota; Rhodophyta; Florideophyceae; Rhodymeniophycidae; Gracilariales;
OC   Gracilariaceae; Agarophyton; Agarophyton tenuistipitatum.
OX   NCBI_TaxID=285951;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RX   PubMed=15638458; DOI=10.1007/s00239-004-2638-3;
RA   Hagopian J.C., Reis M., Kitajima J.P., Bhattacharya D., de Oliveira M.C.;
RT   "Comparative analysis of the complete plastid genome sequence of the red
RT   alga Gracilaria tenuistipitata var. liui provides insights into the
RT   evolution of rhodoplasts and their relationship to other plastids.";
RL   J. Mol. Evol. 59:464-477(2004).
CC   -!- SUBCELLULAR LOCATION: Plastid, chloroplast thylakoid membrane
CC       {ECO:0000255|HAMAP-Rule:MF_00474}; Multi-pass membrane protein
CC       {ECO:0000255|HAMAP-Rule:MF_00474}.
CC   -!- SIMILARITY: Belongs to the PsaG/PsaK family. {ECO:0000255|HAMAP-
CC       Rule:MF_00474}.
CC   ---------------------------------------------------------------------------
CC   Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC   Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC   ---------------------------------------------------------------------------
DR   EMBL; AY673996; AAT79761.1; -; Genomic_DNA.
DR   RefSeq; YP_063686.1; NC_006137.1.
DR   AlphaFoldDB; Q6B8M4; -.
DR   SMR; Q6B8M4; -.
DR   GeneID; 2943974; -.
DR   GO; GO:0009535; C:chloroplast thylakoid membrane; IEA:UniProtKB-SubCell.
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: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   Chloroplast; Membrane; Photosynthesis; Photosystem I; Plastid; Thylakoid;
KW   Transmembrane; Transmembrane helix.
FT   CHAIN           1..86
FT                   /note="Photosystem I reaction center subunit PsaK"
FT                   /id="PRO_0000206214"
FT   TRANSMEM        15..35
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00474"
FT   TRANSMEM        57..77
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00474"
SQ   SEQUENCE   86 AA;  8891 MW;  00D8E9801583AB12 CRC64;
     MNLQTLLSMI SNTSSWSIST AIIMVICNLL CIGLGRYAIQ VRGLGPSIPA LGLKGFGLPE
     LLATTSLGHI IGAGAIIGLN SIKIIN