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Actin: from cell biology to atomic detail
M O Steinmetz1, D Stoffler, A Hoenger
1M. E. Müller Institute for Microscopy, Biozentrum, University of Basel, Switzerland.
Journal of Structural Biology
|August 1, 1997
Summary
Actin filaments, once viewed simply, are now understood as dynamic polymers. This review integrates structural and biochemical data to reveal actin
Area of Science:
- Biochemistry
- Structural Biology
- Cell Biology
Background:
- Actin filaments have transitioned from a static model to a dynamic polymer.
- Understanding actin's complex behavior is key to its cellular functions.
Purpose of the Study:
- To present a correlative view of actin's distinct aspects.
- To critically evaluate functional implications of recent structural, biochemical, and mechanical data.
Main Methods:
- Integrated structural approach combining electron microscopy and X-ray crystallography.
- Analysis of intermediate-resolution 3-D reconstructions of actin filaments.
- Examination of atomic resolution X-ray data of monomeric and polymeric actin.
Main Results:
- Detailed analysis of actin's oligomerization, polymerization, polymorphism, and dynamics.
- Integration of diverse experimental data provides a comprehensive view of actin structure-function.
Conclusions:
- Actin is a highly dynamic protein polymer with complex behaviors.
- Recent structural and biochemical data enhance our understanding of actin's cellular roles.