PSBK_PROM9
ID PSBK_PROM9 Reviewed; 46 AA.
AC Q31CR0;
DT 15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT 06-DEC-2005, sequence version 1.
DT 25-MAY-2022, entry version 76.
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};
GN OrderedLocusNames=PMT9312_0274;
OS Prochlorococcus marinus (strain MIT 9312).
OC Bacteria; Cyanobacteria; Synechococcales; Prochlorococcaceae;
OC Prochlorococcus.
OX NCBI_TaxID=74546;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=MIT 9312;
RG US DOE Joint Genome Institute;
RA Copeland A., Lucas S., Lapidus A., Barry K., Detter J.C., Glavina T.,
RA Hammon N., Israni S., Pitluck S., Thiel J., Schmutz J., Larimer F.,
RA Land M., Kyrpides N., Lykidis A., Richardson P.;
RT "Complete sequence of Prochlorococcus marinus str. MIT 9312.";
RL Submitted (JUL-2005) 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: Cyanobacterial PSII is composed of 1 copy each of membrane
CC proteins PsbA, PsbB, PsbC, PsbD, PsbE, PsbF, PsbH, PsbI, PsbJ, PsbK,
CC PsbL, PsbM, PsbT, PsbX, PsbY, PsbZ, Ycf12, at least 3 peripheral
CC proteins PsbO, PsbU, PsbV and a large number of cofactors. It forms
CC dimeric complexes. {ECO:0000255|HAMAP-Rule:MF_00441}.
CC -!- SUBCELLULAR LOCATION: Cellular thylakoid membrane {ECO:0000255|HAMAP-
CC Rule:MF_00441}; Single-pass membrane protein {ECO:0000255|HAMAP-
CC Rule:MF_00441}.
CC -!- SIMILARITY: Belongs to the PsbK family. {ECO:0000255|HAMAP-
CC Rule:MF_00441}.
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DR EMBL; CP000111; ABB49335.1; -; Genomic_DNA.
DR RefSeq; WP_011375837.1; NC_007577.1.
DR AlphaFoldDB; Q31CR0; -.
DR SMR; Q31CR0; -.
DR STRING; 74546.PMT9312_0274; -.
DR EnsemblBacteria; ABB49335; ABB49335; PMT9312_0274.
DR KEGG; pmi:PMT9312_0274; -.
DR HOGENOM; CLU_174355_0_0_3; -.
DR Proteomes; UP000002715; Chromosome.
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:0031676; C:plasma membrane-derived thylakoid membrane; IEA:UniProtKB-SubCell.
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 Membrane; Photosynthesis; Photosystem II; Reaction center; Thylakoid;
KW Transmembrane; Transmembrane helix.
FT PROPEP 1..9
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00441"
FT /id="PRO_0000316077"
FT CHAIN 10..46
FT /note="Photosystem II reaction center protein K"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00441"
FT /id="PRO_1000025981"
FT TRANSMEM 25..45
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00441"
SQ SEQUENCE 46 AA; 5249 MW; 3F094DB3A63AE37F CRC64;
MLILFNTFAE LPEAYKAFAP TVDVLPLIPL FFFLLVFVWQ AAVGFK