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MAP kinase phosphatase-3 (MKP3), also known as DUSP6 or Pyst1, is a dual specificity phosphatase considered to selectively dephosphorylate extracellular-signal-regulated kinase 1/2 (Erk1/2). Here, we report that in NIH3T3 cells, MKP3 is induced in response to platelet-derived growth factor (PDGF)-BB treatment in an Erk1/2- and phosphatidylinositol 3-kinase (PI3K)-dependent manner, but independently...
The biological outcome of Erk1/2 activation is specified by the duration and magnitude of its phosphorylation, as well as its subcellular localization. In the present study, we investigated how the cross-talk between signaling pathways induced by platelet-derived growth factor receptor β (PDGFRβ) regulates the temporal pattern of Erk1/2 activation. We demonstrated that Src kinase activity was necessary...
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