Influence of Free Fatty Acids, Lysophosphatidylcholine, Platelet-Activating Factor, Acylcarnitine, and Echinocandin B on 1,3-beta-d-Glucan Synthase and Callose Synthesis |
| |
Authors: | Kauss H Jeblick W |
| |
Institution: | Fachbereich Biologie, Universität Kaiserslautern, Postfach 3049, D-6750 Kaiserslautern, Federal Republic of Germany |
| |
Abstract: | The activity of 1,3-β-d-glucan synthase assayed in the presence of digitonin in a microsomal preparation from suspension-cultured cells of Glycine max can be fully inhibited by unsaturated fatty acids, trienoic acids being most effective. Lysophosphatidylcholine, platelet-activating factor, acylcarnitine, and Echinocandin B can also fully inhibit the enzyme. Inhibition is observed both when the enzyme is activated by Ca2+ or by trypsinization. At low amounts some of the substances can also cause stimulation. These effects all may result from a displacement of certain endogenous phospholipids necessary for optimal activity of the 1,3-β-d-glucan synthase. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|