Partial Characterization of Fusicoccin Binding to Receptor Sites on Oat Root Membranes 1

AUTOR(ES)
RESUMO

The possibility that fusicoccin (FC) binds to plasma membrane-associated ATPases of oat (cv. Victory) roots has been examined. Specific FC-binding in vitro is localized primarily on plasma membrane-enriched fractions. This FC-binding is greatly reduced by pretreatment of the membrane vesicles at temperatures above 45 C or with trypsin, and the same treatments cause the release of already bound FC. These results support the idea that the FC receptor is a protein located on the plasma membrane.

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