PSBK_NOSS1
ID PSBK_NOSS1 Reviewed; 45 AA.
AC Q8YYG5;
DT 15-MAY-2002, integrated into UniProtKB/Swiss-Prot.
DT 01-MAR-2002, sequence version 1.
DT 25-MAY-2022, entry version 88.
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=asl0885;
OS Nostoc sp. (strain PCC 7120 / SAG 25.82 / UTEX 2576).
OC Bacteria; Cyanobacteria; Nostocales; Nostocaceae; Nostoc.
OX NCBI_TaxID=103690;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=PCC 7120 / SAG 25.82 / UTEX 2576;
RX PubMed=11759840; DOI=10.1093/dnares/8.5.205;
RA Kaneko T., Nakamura Y., Wolk C.P., Kuritz T., Sasamoto S., Watanabe A.,
RA Iriguchi M., Ishikawa A., Kawashima K., Kimura T., Kishida Y., Kohara M.,
RA Matsumoto M., Matsuno A., Muraki A., Nakazaki N., Shimpo S., Sugimoto M.,
RA Takazawa M., Yamada M., Yasuda M., Tabata S.;
RT "Complete genomic sequence of the filamentous nitrogen-fixing
RT cyanobacterium Anabaena sp. strain PCC 7120.";
RL DNA Res. 8:205-213(2001).
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; BA000019; BAB72842.1; -; Genomic_DNA.
DR PIR; AB1917; AB1917.
DR RefSeq; WP_010995059.1; NZ_RSCN01000006.1.
DR AlphaFoldDB; Q8YYG5; -.
DR SMR; Q8YYG5; -.
DR STRING; 103690.17130230; -.
DR EnsemblBacteria; BAB72842; BAB72842; BAB72842.
DR GeneID; 58722060; -.
DR KEGG; ana:asl0885; -.
DR eggNOG; ENOG5032YQR; Bacteria.
DR OrthoDB; 2090484at2; -.
DR Proteomes; UP000002483; 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;
KW Reference proteome; Thylakoid; Transmembrane; Transmembrane helix.
FT PROPEP 1..8
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00441"
FT /id="PRO_0000029535"
FT CHAIN 9..45
FT /note="Photosystem II reaction center protein K"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00441"
FT /id="PRO_0000029536"
FT TRANSMEM 24..44
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00441"
SQ SEQUENCE 45 AA; 5060 MW; 2F7574C394A32846 CRC64;
MEAALLLAKL PEAYQIFDPL VDVLPIIPVF FLLLAFVWQA AVGFR
