A Translational Regulator, PUM2, Promotes Both Protein Stability and Kinase Activity of Aurora-A
2011
PUM2 Enhances Aurora-A Stability and Activity
publication
Evidence: high
Author Information
Author(s): Huang Yei-Hsuan, Wu Chun-Chi, Chou Chen-Kung, Huang Chi-Ying F.
Primary Institution: National Yang-Ming University
Hypothesis
Does PUM2 play a role in regulating the stability and activity of Aurora-A during the cell cycle?
Conclusion
PUM2 stabilizes Aurora-A and enhances its kinase activity, which is crucial for mitotic entry.
Supporting Evidence
- PUM2 is identified as a novel substrate and interacting protein of Aurora-A.
- Overexpression of PUM2 prevents the degradation of Aurora-A by APC/CCdh1.
- PUM2 enhances the kinase activity of Aurora-A in a dose-dependent manner.
Takeaway
PUM2 helps keep a protein called Aurora-A strong and active, which is important for cells to divide properly.
Methodology
The study involved co-immunoprecipitation, in vitro kinase assays, and cycloheximide chase experiments to analyze the interaction and effects of PUM2 on Aurora-A.
Digital Object Identifier (DOI)
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