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Reactivation of cell-free models of endoplasmic drops from Physarum polycephalum after glycerol extraction at low
European Journal of Cell Biology
|April 1, 1986
Abstract:
The effect of calcium ions on the reactivation of cytoplasmic actomyosin contraction in cell-free models of endoplasmic drops from Physarum polycephalum after glycerol extraction at low ionic strength depends on the duration of the extraction procedure: Ca++ prevents contraction in 20-h extracted specimens, whereas after several days of extraction this Ca++-sensitivity is lost. These results indicate an inhibitory effect of Ca++ on cytoplasmic actomyosin contraction.