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Reference: Whitmarsh AJ and Davis RJ (1998) Structural organization of MAP-kinase signaling modules by scaffold proteins in yeast and mammals. Trends Biochem Sci 23(12):481-5

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Abstract

MAP-kinase signaling pathways are activated by multiple extracellular stimuli. The specificity of activation and function of MAP-kinase signaling modules is determined, in part, by scaffold proteins that create multienzyme complexes. In Saccharomyces cerevisiae, two MAP-kinase-scaffold proteins have been identified. Recent studies of mammalian cells have also led to the identification of putative scaffold proteins. These scaffold proteins appear to facilitate MAP-kinase activation, in response to specific physiological stimuli, and to insulate the bound MAP-kinase module against activation by irrelevant stimuli. Scaffold proteins are therefore critical components of MAP-kinase modules and ensure signaling specificity.

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Whitmarsh AJ, Davis RJ
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