Live Cell Imaging of ERK and MEK: simple binding equilibrium explains the regulated nucleocytoplasmic distribution of ERK.


In response to epidermal growth factor (EGF), the mitogen-activated protein kinase ERK2 translocates into the nucleus. To probe the mechanisms regulating the subcellular localization of ERK2, we used live cell imaging to examine the interaction between MEK1 and ERK2. Fluorescence resonance energy transfer (FRET) studies show that MEK1 and ERK2 directly… (More)


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