Understanding How Small t Antigen Inhibits Protein Phosphatase 2A
Author Information
Author(s): Cho Uhn Soo, Morrone Seamus, Sablina Anna A, Arroyo Jason D, Hahn William C, Xu Wenqing
Primary Institution: Department of Biological Structure, University of Washington
Hypothesis
The study aims to elucidate the structural basis of how the SV40 small t antigen inhibits protein phosphatase 2A.
Conclusion
The crystal structure of the small t antigen in complex with the PP2A A subunit reveals how it inhibits PP2A activity, contributing to our understanding of its oncogenic functions.
Supporting Evidence
- The study provides a detailed structural analysis of the small t antigen and its interaction with the PP2A A subunit.
- The findings suggest that the small t antigen alters the activity of PP2A, a known tumor suppressor.
- The crystal structure was determined at a resolution of 3.1 Å, revealing key interactions between the small t antigen and PP2A.
Takeaway
This study shows how a virus protein can stop a cell's natural defense against cancer by changing the shape of an important enzyme.
Methodology
The researchers determined the crystal structure of the SV40 small t antigen in complex with the PP2A A subunit using X-ray crystallography.
Digital Object Identifier (DOI)
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