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Ets transcription factors: nuclear effectors of the Ras-MAP-kinase signaling pathway
B Wasylyk1, J Hagman, A Gutierrez-Hartmann
1Institut de Génétique et de Biologie Moléculaire et Cellulaire, CNRS, INSERM, ULP, Strasbourg, France.
Abstract:
The Ets family of transcription factors includes nuclear phosphoproteins that are involved in cell proliferation, differentiation and oncogenic transformation. The family is defined by a conserved DNA-binding domain (the ETS-DBD), which forms a highly conserved, winged, helix-turn-helix structural motif. As targets of the Ras-MAPK signaling pathway, Ets proteins function as critical nuclear integrators of ubiquitous signaling cascades. To direct signals to specific target genes, Ets proteins interact with (other) transcription factors that promote the binding of Ets proteins to composite Ras-responsive elements.
Insights
Ets transcription factors are key nuclear proteins regulating cell growth and cancer. They integrate signals from pathways like Ras-MAPK, interacting with other factors to control gene expression via specific DNA elements.
Area of Science:
- Molecular Biology
- Genetics
- Cell Biology
Background:
- Ets family transcription factors are nuclear phosphoproteins crucial for cell proliferation, differentiation, and oncogenic transformation.
- They possess a conserved DNA-binding domain (ETS-DBD) with a winged helix-turn-helix motif.
- Ets proteins act as nuclear integrators of signaling cascades, particularly the Ras-MAPK pathway.
Purpose of the Study:
- To elucidate the role of Ets transcription factors in integrating cellular signaling pathways.
- To understand how Ets proteins interact with other transcription factors to regulate gene expression.
- To investigate the mechanism by which Ets proteins bind to Ras-responsive elements.
Main Methods:
- Analysis of the conserved DNA-binding domain (ETS-DBD) structure.
- Investigation of Ets protein interactions with other transcription factors.
- Study of Ets protein function as targets of the Ras-MAPK signaling pathway.
Main Results:
- Ets proteins are critical nuclear integrators of signaling pathways.
- They interact with other transcription factors to bind composite Ras-responsive elements.
- This interaction directs signals to specific target genes, influencing cell processes.
Conclusions:
- Ets transcription factors play a vital role in cellular signaling and gene regulation.
- Their interaction network allows for precise control of gene expression in response to stimuli.
- Understanding Ets proteins is crucial for comprehending cell proliferation, differentiation, and oncogenesis.