Tyrosine-sulfated glycopeptide involved in cellular proliferation and expansion in Arabidopsis.

@article{Amano2007TyrosinesulfatedGI,
  title={Tyrosine-sulfated glycopeptide involved in cellular proliferation and expansion in Arabidopsis.},
  author={Yukari Amano and Hiroko Tsubouchi and Hidefumi Shinohara and Mari Ogawa and Yoshikatsu Matsubayashi},
  journal={Proceedings of the National Academy of Sciences of the United States of America},
  year={2007},
  volume={104 46},
  pages={
          18333-8
        }
}
Posttranslational modification can confer special functions to peptides. Based on exhaustive liquid chromatography mass spectrometry analysis targeting tyrosine-sulfated peptides, we identified an 18-aa tyrosine-sulfated glycopeptide in Arabidopsis cell suspension culture medium. This peptide, which we named PSY1, significantly promotes cellular proliferation and expansion at nanomolar concentrations. PSY1 is widely expressed in various Arabidopsis tissues, including shoot apical meristem, and… CONTINUE READING
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