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- Title
Catalytic properties of the bifunctional soybean β-glucan-binding protein, a member of family 81 glycoside hydrolases
- Authors
Fliegmann, Judith; Montel, Emilie; Djulić, Alma; Cottaz, Sylvain; Driguez, Hugues; Ebel, Jürgen
- Abstract
Abstract: The β-glucan-binding protein (GBP) of soybean (Glycine max L.) has been shown to contain two different activities. As part of the plasma membrane-localized pathogen receptor complex, it binds a microbial cell wall elicitor, triggering the activation of defence responses. Additionally, the GBP is able to hydrolyze β-1,3-glucans, as present in the cell walls of potential pathogens. The substrate specificity, the mode of action, and the stereochemistry of the catalysis have been elucidated. This defines for the first time the inverting mode of the catalytic mechanism of glycoside hydrolases belonging to family 81.
- Subjects
SOYBEAN; CARRIER proteins; CALMODULIN; PLANT defenses; CELL membranes; PATHOGENIC microorganisms
- Publication
FEBS Letters, 2005, Vol 579, Issue 29, p6647
- ISSN
0014-5793
- Publication type
Article
- DOI
10.1016/j.febslet.2005.10.060