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  • Title: Vacuolar chitinases of tobacco: a new class of hydroxyproline-containing proteins.
    Author: Sticher L, Hofsteenge J, Milani A, Neuhaus JM, Meins F.
    Journal: Science; 1992 Jul 31; 257(5070):655-7. PubMed ID: 1496378.
    Abstract:
    The fungicidal type I chitinases contribute to the defense response of plants against pathogens. Two tobacco chitinases represent a different class of hydroxyproline-containing proteins. Hydroxyproline-rich proteins are predominantly extracellular, structural glycoproteins proteins that lack enzymatic activity and contain many hydroxyproline residues. In contrast, type I chitinases are vacuolar enzymes. They are not glycosylated and contain a small number of hydroxyproline residues restricted to a single, short peptide sequence.
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