Six peptide wound signals derived from a single precursor protein in Ipomoea batatas leaves activate the expression of the defense gene sporamin.

@article{Chen2008SixPW,
  title={Six peptide wound signals derived from a single precursor protein in Ipomoea batatas leaves activate the expression of the defense gene sporamin.},
  author={Yu-Chi Chen and William Frederick Siems and Gregory T. Pearce and Clarence A. Ryan},
  journal={The Journal of biological chemistry},
  year={2008},
  volume={283 17},
  pages={
          11469-76
        }
}
A mixture of three homologous bioactive hydroxyproline-rich glycopeptides (HypSys peptides) of 18 amino acids in length, differing only at two residues, was isolated from leaves of Ipomoea batatas, the common sweet potato. One of the peptides represented over 95% of the isolated isopeptides, which, at 2.5 nm concentration, induced the expression of sporamin, a major defense protein of I. batatas. The sequence of the major isoform was used to synthesize a primer that identified a cDNA encoding a… CONTINUE READING
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