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Transcription: activation by cooperating conformations

A Travers1

  • 1MRC Laboratory of Molecular Biology, Cambridge, UK.

Current Biology : CB
|September 22, 1998
PubMed
Summary
This summary is machine-generated.

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Transcription factors NFAT and Fos-Jun form a higher-order complex through protein and DNA conformational changes. This enables an expanded protein interface while maintaining core DNA sequence recognition.

Area of Science:

  • Molecular Biology
  • Structural Biology
  • Biochemistry

Background:

  • Transcription factors regulate gene expression.
  • NFAT and Fos-Jun are key transcription factors involved in cellular processes.
  • Cooperative binding of transcription factors can enhance gene regulation.

Purpose of the Study:

  • To investigate the structural basis of the cooperative complex formation between NFAT and Fos-Jun.
  • To elucidate the conformational changes in DNA and proteins during complex assembly.
  • To understand how DNA binding specificity is maintained.

Main Methods:

  • Structural analysis techniques (e.g., X-ray crystallography, cryo-EM).
  • Biochemical assays to study protein-DNA interactions.
  • Computational modeling to analyze conformational dynamics.

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Main Results:

  • Cooperative binding of NFAT and Fos-Jun leads to significant conformational changes in both proteins and the DNA.
  • An extended protein-protein interface is formed within the higher-order complex.
  • The core DNA binding sequences are recognized despite the conformational alterations.

Conclusions:

  • The formation of the NFAT-Fos-Jun complex involves dynamic structural rearrangements.
  • These rearrangements facilitate enhanced protein-protein interactions and maintain DNA binding specificity.
  • Understanding these mechanisms provides insights into transcriptional regulation.