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Axonemal Dynein Arms.
1Department of Molecular Biology and Biophysics, University of Connecticut Health Center, Farmington, Connecticut 06030-3305.
Cold Spring Harbor Perspectives in Biology
|August 17, 2016
Summary
Axonemal dyneins are motor proteins essential for ciliary movement. This review covers their structure, assembly, and how they regulate mechanical work in response to cellular signals and mechanical cues.
Area of Science:
- Biochemistry
- Cell Biology
- Molecular Motors
Background:
- Axonemal dyneins are crucial molecular motors driving motility in cilia and flagella.
- These dyneins are organized into inner and outer rows of arms along doublet microtubules.
Purpose of the Study:
- To summarize current understanding of axonemal dynein structure, assembly, and organization.
- To highlight the regulatory mechanisms influencing dynein motor function.
Main Methods:
- Review of existing literature on axonemal dynein research.
- Analysis of structural and functional data.
Main Results:
- Dyneins are categorized into two main groups based on heavy-chain motors.
- Complex regulatory components modulate dynein function via phosphorylation, ligands (e.g., Ca2+), redox state, and mechanical feedback.
Conclusions:
- Axonemal dynein function is intricately regulated, allowing for coordinated mechanical work propagation along the axoneme.
- Understanding these mechanisms is key to deciphering ciliary motility.
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