ID   PSAK_MEDSA              Reviewed;         129 AA.
AC   Q9ZT05;
DT   02-NOV-2001, integrated into UniProtKB/Swiss-Prot.
DT   01-MAY-1999, sequence version 1.
DT   25-MAY-2022, entry version 79.
DE   RecName: Full=Photosystem I reaction center subunit psaK, chloroplastic;
DE   AltName: Full=PSI-K;
DE   AltName: Full=Photosystem I subunit X;
DE   Flags: Precursor;
GN   Name=PSAK;
OS   Medicago sativa (Alfalfa).
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae;
OC   rosids; fabids; Fabales; Fabaceae; Papilionoideae; 50 kb inversion clade;
OC   NPAAA clade; Hologalegina; IRL clade; Trifolieae; Medicago.
OX   NCBI_TaxID=3879;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [MRNA].
RC   STRAIN=cv. N4-4-2; TISSUE=Shoot;
RA   Stout J.M., McKersie B.D.;
RT   "Gene expression in Medicago sativa shoots.";
RL   Submitted (AUG-1998) to the EMBL/GenBank/DDBJ databases.
CC   -!- SUBCELLULAR LOCATION: Plastid, chloroplast thylakoid membrane
CC       {ECO:0000250}; Multi-pass membrane protein {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the PsaG/PsaK family. {ECO:0000305}.
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DR   EMBL; AF084200; AAC77926.1; -; mRNA.
DR   AlphaFoldDB; Q9ZT05; -.
DR   SMR; Q9ZT05; -.
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-KW.
DR   Gene3D; 1.10.286.40; -; 1.
DR   InterPro; IPR035982; PSI_centre_PsaK_sf.
DR   InterPro; IPR000549; PSI_PsaG/PsaK.
DR   InterPro; IPR023618; PSI_PsaG/PsaK_dom.
DR   InterPro; IPR016370; PSI_PsaG/PsaK_pln.
DR   InterPro; IPR017493; PSI_PsaK_pln.
DR   PANTHER; PTHR34195; PTHR34195; 1.
DR   Pfam; PF01241; PSI_PSAK; 1.
DR   PIRSF; PIRSF002912; PSI_PsaK; 1.
DR   SUPFAM; SSF81563; SSF81563; 1.
DR   TIGRFAMs; TIGR03050; PS_I_psaK_plant; 1.
DR   PROSITE; PS01026; PHOTOSYSTEM_I_PSAGK; 1.
PE   2: Evidence at transcript level;
KW   Chloroplast; Membrane; Photosynthesis; Photosystem I; Plastid; Thylakoid;
KW   Transit peptide; Transmembrane; Transmembrane helix.
FT   TRANSIT         1..46
FT                   /note="Chloroplast"
FT                   /evidence="ECO:0000250"
FT   CHAIN           47..129
FT                   /note="Photosystem I reaction center subunit psaK,
FT                   chloroplastic"
FT                   /id="PRO_0000029395"
FT   TRANSMEM        48..68
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        104..124
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   129 AA;  13337 MW;  6BC3FBCB3F8ACF6F CRC64;
     MATSMMTTLP QFTGLRPQLK PSPIQGLVAA QPMTRRKGKG ALGVRCDFIG SSTNVIMVAS
     TTLMLFAGRF GLAPSANRKA TAGLKLETRD SGLQTGDPAG FTLADTLACG TVGHIIGVGV
     VLGLRTLCM