PSBK_ARATH
ID PSBK_ARATH Reviewed; 61 AA.
AC P56782;
DT 30-MAY-2000, integrated into UniProtKB/Swiss-Prot.
DT 30-MAY-2000, sequence version 1.
DT 25-MAY-2022, entry version 106.
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}; OrderedLocusNames=AtCg00070;
OS Arabidopsis thaliana (Mouse-ear cress).
OG Plastid; Chloroplast.
OC Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae;
OC rosids; malvids; Brassicales; Brassicaceae; Camelineae; Arabidopsis.
OX NCBI_TaxID=3702;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=cv. Columbia;
RX PubMed=10574454; DOI=10.1093/dnares/6.5.283;
RA Sato S., Nakamura Y., Kaneko T., Asamizu E., Tabata S.;
RT "Complete structure of the chloroplast genome of Arabidopsis thaliana.";
RL DNA Res. 6:283-290(1999).
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; AP000423; BAA84368.1; -; Genomic_DNA.
DR RefSeq; NP_051042.1; NC_000932.1.
DR PDB; 5MDX; EM; 5.30 A; K/k=25-61.
DR PDB; 7OUI; EM; 2.79 A; K/k=25-61.
DR PDBsum; 5MDX; -.
DR PDBsum; 7OUI; -.
DR AlphaFoldDB; P56782; -.
DR SMR; P56782; -.
DR IntAct; P56782; 1.
DR STRING; 3702.ATCG00070.1; -.
DR TCDB; 3.E.2.2.3; the photosynthetic reaction center (prc) family.
DR PaxDb; P56782; -.
DR EnsemblPlants; ATCG00070.1; ATCG00070.1; ATCG00070.
DR GeneID; 844795; -.
DR Gramene; ATCG00070.1; ATCG00070.1; ATCG00070.
DR KEGG; ath:ArthCp005; -.
DR Araport; ATCG00070; -.
DR TAIR; locus:504954631; ATCG00070.
DR eggNOG; ENOG502SAFC; Eukaryota.
DR HOGENOM; CLU_174355_1_0_1; -.
DR InParanoid; P56782; -.
DR OMA; PIIDVMP; -.
DR OrthoDB; 1631304at2759; -.
DR PRO; PR:P56782; -.
DR Proteomes; UP000006548; Chloroplast.
DR ExpressionAtlas; P56782; baseline and differential.
DR Genevisible; P56782; AT.
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 1: Evidence at protein level;
KW 3D-structure; Chloroplast; Membrane; Photosynthesis; Photosystem II;
KW Plastid; Reaction center; Reference proteome; Thylakoid; Transmembrane;
KW Transmembrane helix.
FT PROPEP 1..24
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00441"
FT /id="PRO_0000029439"
FT CHAIN 25..61
FT /note="Photosystem II reaction center protein K"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00441"
FT /id="PRO_0000029440"
FT TRANSMEM 40..60
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00441"
FT HELIX 28..33
FT /evidence="ECO:0007829|PDB:7OUI"
FT HELIX 34..39
FT /evidence="ECO:0007829|PDB:7OUI"
FT HELIX 40..42
FT /evidence="ECO:0007829|PDB:7OUI"
FT HELIX 43..57
FT /evidence="ECO:0007829|PDB:7OUI"
SQ SEQUENCE 61 AA; 6975 MW; 8EF2C8BE8CA706B9 CRC64;
MLNIFNLICI FFNSTLFSST FLVAKLPEAY AFLNPIVDVM PVIPLFFLLL AFVWQAAVSF
R
