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Actin assembly mechanisms at a glance
Klemens Rottner1,2, Jan Faix3, Sven Bogdan4
1Division of Molecular Cell Biology, Zoological Institute, Technische Universität Braunschweig, 38106 Braunschweig, Germany.
Journal of Cell Science
|October 17, 2017
Summary
Mammalian cell shape and movement rely on the actin cytoskeleton. Coordinated protein complexes precisely control actin assembly, elongation, and force generation for diverse cellular functions.
Area of Science:
- Cell Biology
- Cytoskeletal Dynamics
- Molecular Motors
Background:
- The actin cytoskeleton and motor proteins drive mammalian cell morphology and dynamics.
- Actin assembly is crucial for cell motility, division, and intracellular membrane transport.
- Targeting actin nucleators to specific cellular sites ensures localized actin filament formation.
Purpose of the Study:
- To summarize current knowledge on protein complexes regulating actin nucleation, elongation, and force generation.
- To discuss the modes of action of these conserved protein complexes.
- To highlight the coordination required for orchestrating force generation in cells.
Main Methods:
- Literature review and synthesis of recent research findings.
- Analysis of conserved protein complexes involved in actin dynamics.
- Discussion of subcellular targeting and activation mechanisms of actin regulators.
Main Results:
- Actin nucleators, elongators, and myosin motors are tightly coordinated by conserved protein complexes.
- These complexes ensure the spatiotemporal regulation of actin assembly for diverse cellular functions.
- Targeting and activation mechanisms are key to orchestrating force generation.
Conclusions:
- Conserved protein complexes play a critical role in regulating actin cytoskeleton dynamics.
- Understanding these complexes is essential for comprehending cell morphology and motility.
- This review provides insights into the coordinated control of actin-based force generation.