Phosphorylation of the phytosulfokine peptide receptor PSKR1 controls receptor activity

@inproceedings{Kaufmann2017PhosphorylationOT,
  title={Phosphorylation of the phytosulfokine peptide receptor PSKR1 controls receptor activity},
  author={Christine Kaufmann and Michael Motzkus and Margret Sauter},
  booktitle={Journal of experimental botany},
  year={2017}
}
The phytosulfokine peptide receptor PSKR1 is modified by phosphorylation of its cytoplasmic kinase domain. We analyzed defined phosphorylation sites by site-directed mutagenesis with regard to kinase activity in vitro and receptor activity in planta. S696 and S698 in the juxtamembrane (JM) domain are phosphorylated in planta. The phosphomimetic S696D/S698D replacements resulted in reduced transphosphorylation activity of PSKR1 kinase in vitro but did not reduce autophosphorylation activity… CONTINUE READING
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