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Overview
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Background
Jasplakinolide, a cyclodepsipeptide originally isolated from the marine sponge, Jaspis johnstoni, is a potent inducer of actin polymerization, which also stabilizes pre-formed actin filaments. Jasplakinolide may exert its cytotoxic effect by binding to F-actin. Compared with Ca2+-actin, jasplakinolide shows a much greater effect on Mg2+-actin, and binds to F-actin competitively with phalloidin with a Kd value of ~ 15 nM. Jasplakinolide exhibits both fungicidal and antiproliferative activity. In addition, jasplakinolide is membrane-permeable, which makes it a commonly used tool in cell biology, when actin polymerization or actin filament stabilization has to be achieved.
1. Bubb MR, Senderowicz AM, Sausville EA, et al. Jasplakinolide, a cytotoxic natural product, induces actin polymerization and competitively inhibits the binding of phalloidin to F-actin. Journal of Biological Chemistry, 1994, 269(21): 14869-14871.
2. Holzinger A. Jasplakinolide: an actin-specific reagent that promotes actin polymerization. Methods in Molecular Biology, 2009, 586: 71-87.
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Overview