Molecular to organismal chirality is induced by the conserved myosin 1D

Abstract : The emergence of asymmetry from an initially symmetrical state is a universal transition in nature. Living organisms show asymmetries at the molecular, cellular, tissular, and organismal level. However, whether and how multilevel asymmetries are related remains unclear. In this study, we show that Drosophila myosin 1D (Myo1D) and myosin 1C (Myo1C) are sufficient to generate de novo directional twisting of cells, single organs, or the whole body in opposite directions. Directionality lies in the myosins' motor domain and is swappable between Myo1D and Myo1C. In addition, Myo1D drives gliding of actin filaments in circular, counterclockwise paths in vitro. Altogether, our results reveal the molecular motor Myo1D as a chiral determinant that is sufficient to break symmetry at all biological scales through chiral interaction with the actin cytoskeleton.
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https://hal.umontpellier.fr/hal-02282988
Contributeur : Anthony Herrada <>
Soumis le : mardi 10 septembre 2019 - 13:27:57
Dernière modification le : jeudi 12 septembre 2019 - 15:43:57

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G. Lebreton, C. Géminard, F. Lapraz, S. Pyrpassopoulos, D. Cerezo, et al.. Molecular to organismal chirality is induced by the conserved myosin 1D. Science, American Association for the Advancement of Science, 2018, 362 (6417), pp.949-952. ⟨10.1126/science.aat8642⟩. ⟨hal-02282988⟩

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