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Related Experiment Videos

DP and E2F proteins: coordinating transcription with cell cycle progression

E W Lam1, N B La Thangue

  • 1MRC National Institute for Medical Research, London, UK.

Current Opinion in Cell Biology
|December 1, 1994
PubMed
Summary

The DRTF1/E2F transcription factor complex regulates cell cycle progression by integrating cell growth signals. Its activity, controlled by phosphorylation, is crucial for cell cycle control and involves DP and E2F proteins.

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Area of Science:

  • Molecular Biology
  • Cell Biology
  • Genetics

Background:

  • Transcriptional control is vital for cell cycle progression, particularly at the G1/S transition.
  • The DRTF1/E2F transcription factor complex integrates cell cycle machinery with transcription.
  • DRTF1/E2F acts as a convergence point for growth signals and is targeted by oncoviral proteins.

Purpose of the Study:

  • To elucidate the role of the DRTF1/E2F transcription factor in regulating cell cycle progression.
  • To understand the combinatorial interaction of DP and E2F proteins within the DRTF1/E2F complex.
  • To investigate the cell cycle-dependent regulation of DP and E2F protein activity.

Main Methods:

  • Analysis of protein-protein interactions between DP and E2F families.

Related Experiment Videos

  • Investigation of phosphorylation-dependent regulation of DP and E2F activities.
  • Assessment of the proto-oncogenic and apoptosis-regulating roles of DP and E2F proteins.

    • Main Results:

    • DP and E2F proteins form heterodimers constituting the DRTF1/E2F complex.
    • Cyclin-dependent kinase activity regulates DP and E2F protein phosphorylation and activity.
    • Both DP and E2F proteins exhibit proto-oncogenic activity and are implicated in apoptosis regulation.

    Conclusions:

    • The DRTF1/E2F transcription factor complex plays a critical role in G1/S transition and cell cycle progression.
    • Understanding DRTF1/E2F regulation is key to comprehending cell cycle control and its subversion in disease.
    • DP/E2F heterodimer activity is a central mechanism for integrating growth signals and controlling cell fate.