alexa Protein phosphatases and the regulation of mitogen-activated protein kinase signalling.
Microbiology

Microbiology

Journal of Antivirals & Antiretrovirals

Author(s): Keyse SM

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Abstract The magnitude and duration of signalling through mitogen- and stress-activated kinases are critical determinants of biological effect. This reflects a balance between the activities of upstream activators and a complex regulatory network of protein phosphatases. These mitogen-activated protein kinase phosphatases include both dual-specificity (threonine/tyrosine) and tyrosine-specific enzymes, and recent evidence suggests that a single mitogen-activated protein kinase isoform may be acted upon by both classes of protein phosphatase. In both cases, substrate selectivity is determined by specific protein-protein interactions mediated through noncatalytic amino-terminal mitogen-activated protein kinase binding domains. Future challenges include the determination of exactly how this network of protein phosphatases interacts selectively with mitogen-activated protein kinase signalling complexes to achieve precise regulation of these key pathways in mammalian cells.
This article was published in Curr Opin Cell Biol and referenced in Journal of Antivirals & Antiretrovirals

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