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Regulation of gene expression by serine/threonine protein phosphatases
1Department of Molecular Microbiology and Immunology, University of Southern California, Los Angeles 90033-1054, USA.
Abstract:
The activation of signal transduction pathways by extracellular stimuli, such as growth factors or hormones, ultimately results in changes in the expression of specific genes. The altered pattern of expression eventually determines the resulting cellular consequences, e.g. cell growth, division, or differentiation. It has been well established that the reversible phosphorylation of proteins is a major regulatory mechanism in these processes. However, while much has been learned about the role of kinases, the involvement of protein phosphatases is less clear and has only recently begun to be investigated in more detail. This review will present some of the new findings that demonstrate a crucial regulatory function of serine/threonine protein phosphatases (PPases) in gene regulatory processes.
Insights
Extracellular signals trigger gene expression changes via protein phosphorylation. This review highlights new findings on the crucial role of serine/threonine protein phosphatases (PPases) in regulating these gene expression processes.
Area of Science:
- Molecular Biology
- Cellular Biology
- Biochemistry
Background:
- Extracellular stimuli like growth factors activate signal transduction pathways.
- These pathways culminate in altered gene expression, influencing cell growth, division, and differentiation.
- Protein phosphorylation is a key regulatory mechanism, with kinases well-studied, but phosphatases less so.
Purpose of the Study:
- To review recent findings on the regulatory role of serine/threonine protein phosphatases (PPases).
- To elucidate the involvement of PPases in gene regulatory processes.
Main Methods:
- Literature review of recent research.
- Analysis of studies investigating serine/threonine protein phosphatases.
Main Results:
- New findings demonstrate a crucial regulatory function of serine/threonine protein phosphatases (PPases).
- PPases play a significant role in controlling gene expression patterns.
Conclusions:
- Serine/threonine protein phosphatases are critical regulators of gene expression.
- Further investigation into PPase involvement in cellular processes is warranted.