Intrinsic Capability of Budding Yeast Cofilin to Promote Turnover of Tropomyosin-Bound Actin Filaments
2008
How Yeast Cofilin Helps Actin Filaments Turn Over
publication
Evidence: moderate
Author Information
Author(s): Fan Xiaoxue, Martin-Brown, Skylar Florens, Laurence Li, Rong
Primary Institution: The Stowers Institute for Medical Research
Hypothesis
Does cofilin promote the turnover of tropomyosin-bound actin filaments in yeast?
Conclusion
Yeast cofilin can promote the turnover of tropomyosin-bound actin filaments despite tropomyosin's protective role.
Supporting Evidence
- Cofilin was identified as a tropomyosin-binding protein through affinity chromatography.
- Cofilin can sever actin filaments decorated with tropomyosin.
- The protective effect of tropomyosin against cofilin is not as strong as previously thought.
Takeaway
Cofilin is like a pair of scissors for actin filaments, helping them break down even when they are wrapped in a protective layer.
Methodology
The study used proteomics to identify tropomyosin-binding proteins and conducted various assays to test cofilin's ability to sever actin filaments.
Digital Object Identifier (DOI)
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