ID   PSBK_SOLTU              Reviewed;          61 AA.
AC   Q2VEJ3;
DT   06-FEB-2007, integrated into UniProtKB/Swiss-Prot.
DT   10-JAN-2006, sequence version 1.
DT   25-MAY-2022, entry version 52.
DE   RecName: Full=Photosystem II reaction center protein K {ECO:0000255|HAMAP-Rule:MF_00441};
DE            Short=PSII-K {ECO:0000255|HAMAP-Rule:MF_00441};
DE   Flags: Precursor;
GN   Name=psbK {ECO:0000255|HAMAP-Rule:MF_00441};
OS   Solanum tuberosum (Potato).
OG   Plastid; Chloroplast.
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae;
OC   asterids; lamiids; Solanales; Solanaceae; Solanoideae; Solaneae; Solanum.
OX   NCBI_TaxID=4113;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=cv. Desiree;
RX   PubMed=16835751; DOI=10.1007/s00299-006-0196-4;
RA   Chung H.-J., Jung J.D., Park H.-W., Kim J.-H., Cha H.W., Min S.R.,
RA   Jeong W.-J., Liu J.R.;
RT   "The complete chloroplast genome sequences of Solanum tuberosum and
RT   comparative analysis with Solanaceae species identified the presence of a
RT   241-bp deletion in cultivated potato chloroplast DNA sequence.";
RL   Plant Cell Rep. 25:1369-1379(2006).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=cv. Desiree;
RA   Gargano D., Scotti N., Vezzi A., Bilardi A., Valle G., Grillo S., Cardi T.;
RT   "Complete chloroplast genome sequences of Solanum tuberosum cultivar
RT   Desiree and comparative analyses with other Solanaceae genomes.";
RL   Submitted (FEB-2006) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: One of the components of the core complex of photosystem II
CC       (PSII). PSII is a light-driven water:plastoquinone oxidoreductase that
CC       uses light energy to abstract electrons from H(2)O, generating O(2) and
CC       a proton gradient subsequently used for ATP formation. It consists of a
CC       core antenna complex that captures photons, and an electron transfer
CC       chain that converts photonic excitation into a charge separation.
CC       {ECO:0000255|HAMAP-Rule:MF_00441}.
CC   -!- SUBUNIT: PSII is composed of 1 copy each of membrane proteins PsbA,
CC       PsbB, PsbC, PsbD, PsbE, PsbF, PsbH, PsbI, PsbJ, PsbK, PsbL, PsbM, PsbT,
CC       PsbX, PsbY, PsbZ, Ycf12, at least 3 peripheral proteins of the oxygen-
CC       evolving complex and a large number of cofactors. It forms dimeric
CC       complexes. {ECO:0000255|HAMAP-Rule:MF_00441}.
CC   -!- SUBCELLULAR LOCATION: Plastid, chloroplast thylakoid membrane
CC       {ECO:0000255|HAMAP-Rule:MF_00441}; Single-pass membrane protein
CC       {ECO:0000255|HAMAP-Rule:MF_00441}.
CC   -!- SIMILARITY: Belongs to the PsbK family. {ECO:0000255|HAMAP-
CC       Rule:MF_00441}.
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DR   EMBL; DQ231562; ABB90026.1; -; Genomic_DNA.
DR   EMBL; DQ386163; ABD47040.1; -; Genomic_DNA.
DR   RefSeq; YP_635622.1; NC_008096.2.
DR   AlphaFoldDB; Q2VEJ3; -.
DR   SMR; Q2VEJ3; -.
DR   GeneID; 4099952; -.
DR   KEGG; sot:4099952; -.
DR   InParanoid; Q2VEJ3; -.
DR   OrthoDB; 1631304at2759; -.
DR   Proteomes; UP000011115; Unassembled WGS sequence.
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:0009539; C:photosystem II reaction center; IEA:InterPro.
DR   GO; GO:0015979; P:photosynthesis; IEA:UniProtKB-UniRule.
DR   HAMAP; MF_00441; PSII_PsbK; 1.
DR   InterPro; IPR003687; PSII_PsbK.
DR   InterPro; IPR037270; PSII_PsbK_sf.
DR   PANTHER; PTHR35325; PTHR35325; 1.
DR   Pfam; PF02533; PsbK; 1.
DR   SUPFAM; SSF161037; SSF161037; 1.
PE   3: Inferred from homology;
KW   Chloroplast; Membrane; Photosynthesis; Photosystem II; Plastid;
KW   Reaction center; Reference proteome; Thylakoid; Transmembrane;
KW   Transmembrane helix.
FT   PROPEP          1..24
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00441"
FT                   /id="PRO_0000276180"
FT   CHAIN           25..61
FT                   /note="Photosystem II reaction center protein K"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00441"
FT                   /id="PRO_0000276181"
FT   TRANSMEM        36..56
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00441"
SQ   SEQUENCE   61 AA;  6930 MW;  4F1641C8E9392D03 CRC64;
     MLNTFSLIGI CLNSTLYSSS FFFGKLPEAY AFLNPIVDIM PVIPLFFFLL AFVWQAAVSF
     R