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Structure/function relationships of CREB/ATF proteins
1Department of Medicine, University of Colorado School of Medicine, Denver.
Abstract:
Signal-transduction pathways converge ultimately at the level of transcriptional activation to produce specific patterns of gene expression in response to environmental stimuli. The initiation of transcription mediated by these signaling pathways is regulated by the coordinate expression and/or activation of specific transcription factors that bind to the control regions of genes. Specific insights into the mechanisms underlying transcriptional activation have recently arisen from studies of the structure and functions of these transcription factors. The CREB/ATF family of transcriptional transactivating proteins has only recently been discovered and appears to provide a link between the regulation of gene expression in response to activators of cellular signaling pathways and the regulation of gene expression by viral transactivating proteins. In addition, these proteins may be involved in the normal regulation of growth and differentiation. Understanding the nature and importance of the role(s) of these proteins in the normal regulation of growth and differentiation will have profound influences on the understanding of the aberrant regulation of these processes during oncogenesis.
Insights
The CREB/ATF family of transcription factors links cellular signaling to gene expression. Understanding their role in growth and differentiation is key to understanding cancer development.
Area of Science:
- Molecular Biology
- Cellular Biology
- Genetics
Background:
- Signal-transduction pathways regulate gene expression via transcriptional activation.
- Transcription factors binding to gene control regions are crucial for this process.
- Recent studies illuminate the structure and function of these critical transcription factors.
Purpose of the Study:
- To investigate the role of the CREB/ATF family of transcription factors.
- To understand their involvement in linking cellular signaling pathways to gene expression.
- To explore their potential role in growth, differentiation, and oncogenesis.
Main Methods:
- Analysis of transcription factor structure and function.
- Studies on cellular signaling pathways.
- Investigation of gene expression patterns.
Main Results:
- The CREB/ATF family acts as a bridge between signaling pathways and gene expression regulation.
- These proteins connect cellular signaling to viral transactivator functions.
- Evidence suggests involvement in normal growth and differentiation processes.
Conclusions:
- The CREB/ATF family plays a significant role in regulating gene expression.
- Understanding their function is vital for comprehending normal growth and differentiation.
- Insights into CREB/ATF are crucial for understanding aberrant regulation in oncogenesis.