Journal
PHYTOCHEMISTRY
Volume 67, Issue 6, Pages 528-533Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.phytochem.2005.12.025
Keywords
plant innate immunity; polygalacturonase; polygalacturonase inhibiting protein; crystal structure; protein-protein interaction
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Polygalacturonase-inhibiting proteins are plant extracellular leucine-rich repeat proteins that specifically bind and inhibit fungal polygalacturonases. The interaction with PGIP limits the destructive potential of polygalacturonases and might trigger the plant defence responses induced by oligogalacturonides. A high degree of polymorphism is found both in PGs and PGIPs, accounting for the specificity of different plant inhibitors for PGs from different fungi. Here, we review the structural features and our current understanding of the PG-PGIP interaction. (c) 2005 Elsevier Ltd. Ail rights reserved.
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