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- W2077394931 abstract "Some phytopathogenic fungi withinPhytophthoraspecies are unable to synthesize sterols and therefore must pick them up from the membranes of their host-plant, using an unknown mechanism. These pseudo-fungi secrete elicitins which are small hydrophilic cystein-rich proteins. The results show that elicitins studied interact with dehydroergosterol in the same way, but with some time-dependent differences. Elicitins have one binding site with a similar strong affinity for dehydroergosterol. Using a non-steroid hydrophobic fluorescent probe, we showed that phytosterols are able to similarly bind to elicitins. Moreover, elicitins catalyze sterol transfer between phospholipidic artificial membranes. Our results afford the first evidence for a molecular activity of elicitins which appears to be extracellular sterol carrier proteins. This property should contribute to an understanding of the molecular mechanism involved in sterol uptake byPhytophthora.It opens new perspectives concerning the role of such proteins in plant-microorganism interactions, since elicitins trigger defence reactions in plants." @default.
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- W2077394931 date "1998-04-01" @default.
- W2077394931 modified "2023-10-17" @default.
- W2077394931 title "Elicitins, Proteinaceous Elicitors of Plant Defense, Are a New Class of Sterol Carrier Proteins" @default.
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- W2077394931 doi "https://doi.org/10.1006/bbrc.1998.8341" @default.
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