Reference: van Drogen F and Peter M (2001) MAP kinase dynamics in yeast. Biol Cell 93(1-2):63-70

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Abstract

MAP kinase pathways play key roles in cellular responses towards extracellular signals. In several cases, the three core kinases interact with a scaffold molecule, but the function of these scaffolds is poorly understood. They have been proposed to contribute to signal specificity, signal amplification, or subcellular localization of MAP kinases. Several MAP kinases translocate to the nucleus in response to their activation, suggesting that nuclear transport may provide a regulatory mechanism. Here we describe new applications for Fluorescence Recovery After Photobleaching (FRAP) and Fluorescence Loss In Photobleaching (FLIP), to study dynamic translocations of MAPKs between different subcellular compartments. We have used these methods to measure the nuclear/cytoplasmic dynamics of several yeast MAP kinases, and in particular to address the role of scaffold proteins for MAP-kinase signaling.

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van Drogen F, Peter M
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