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Related Experiment Videos

Ras enhances Myc protein stability.

R Sears1, G Leone, J DeGregori

  • 1Department of Genetics, Howard Hughes Medical Institute, Duke University Medical Center, Durham, North Carolina 27710, USA.

Molecular Cell
|March 17, 1999
PubMed
Summary
This summary is machine-generated.

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Ras protein stabilizes Myc protein, enhancing its activity. This collaboration is crucial for normal cell growth and cancer development, involving the Ras/Raf/MAPK pathway and inhibiting proteasome degradation.

Area of Science:

  • Molecular Biology
  • Cellular Biology
  • Oncogenesis

Background:

  • Myc and Ras proteins collaborate in cell growth and oncogenesis.
  • Myc protein has a short half-life due to proteasomal degradation.
  • Mitogenic signals influence Myc protein stability.

Purpose of the Study:

  • To investigate how Ras influences Myc protein activity.
  • To elucidate the mechanism of Myc protein stabilization by Ras.
  • To understand the role of the Ras/Raf/MAPK pathway in Myc regulation.

Main Methods:

  • Protein stability assays
  • Analysis of the Ras/Raf/MAPK pathway
  • Proteasome activity assessment

Main Results:

Related Experiment Videos

  • Ras enhances Myc activity by stabilizing the Myc protein.
  • Myc half-life increases in growth-stimulated cells.
  • Stabilization is dependent on the Ras/Raf/MAPK pathway and involves inhibition of proteasomal degradation.

Conclusions:

  • Ras inhibits proteasome-dependent Myc degradation.
  • Ras enhances the accumulation of transcriptionally active Myc protein.
  • This mechanism is a key aspect of Myc-Ras collaboration in cell regulation and cancer.