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  • Title: F-actin distribution of Dictyostelium myosin I double mutants.
    Author: Peterson MD, Titus MA.
    Journal: J Eukaryot Microbiol; 1994; 41(6):652-7. PubMed ID: 7866390.
    Abstract:
    The roles of the myosin I class of mechanoenzymes have been investigated by single and double gene knockout studies in the amoeba Dictyostelium discoideum. Cells lacking different myosin I pairs (myoA-/myoB-, myoB-/myoC-, and myoA-/myoC-) were examined with respect to their cytoskeletal organization. F-actin localization by rhodamine-phalloidin staining of cells indicates that the myoA-/myoB-, myoB-/myoC-, and myoA-/myoC- cells appear to redistribute their F-actin more slowly than wild type cells upon adhesion to a substrate. These studies suggest that Dictyostelium myoA, myoB, and myoC may have overlapping roles in maintaining the integrity or organization of the cortical membrane cytoskeleton.
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