Vacuolar Chitinases of Tobacco: a New Class of Hydroxyproline-Containing Proteins
- 31 July 1992
- journal article
- research article
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 257 (5070) , 655-657
- https://doi.org/10.1126/science.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.Keywords
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