How Protein Phosphatase 2A is Made Active
Author Information
Author(s): Hombauer Hans, Weismann David, Mudrak Ingrid, Stanzel Claudia, Fellner Thomas, Lackner Daniel H, Ogris Egon
Primary Institution: Department of Medical Biochemistry, Max F. Perutz Laboratories, Medical University of Vienna, Vienna, Austria
Hypothesis
Is the generation of the active catalytic subunit of protein phosphatase 2A (PP2A) coupled with holoenzyme assembly?
Conclusion
The study shows that the generation of the active catalytic subunit of PP2A is indeed coupled with the assembly of its holoenzyme.
Supporting Evidence
- The study provides evidence that the catalytic subunit of PP2A exists in a low-activity form that requires specific interactions for activation.
- Deletion of the TPD3 subunit leads to decreased phosphatase activity, indicating its role in PP2A biogenesis.
- The interaction between RRD2 and TPD3 is crucial for the maturation of the C subunit of PP2A.
Takeaway
This research explains how a protein called PP2A becomes active and how it is put together with other parts to work properly.
Methodology
The study involved analyzing the biogenesis of PP2A in yeast, focusing on the interactions between various subunits and their effects on activity.
Statistical Information
P-Value
p<0.001
Statistical Significance
p<0.001
Digital Object Identifier (DOI)
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