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- _5 value "We have found that activation of the MEK5-ERK5 pathway causes the phosphorylation and stabilization of c-Fos and Fra-1.Phosphorylation of c-Fos appears to be mediated by ERK5 and a kinase(s) lying downstream of ERK5, and the MEK5-ERK5 pathway-dependent phosphorylation sites on c-Fos are different from the ERK1/2 pathway-dependent ones. Interestingly, activation of the MEK5-ERK5 pathway, but not that of the ERK1/2 pathway, is found to markedly increase the transactivation activity of c-Fos. Furthermore, our results show that the C-terminal half of ERK5 is necessary for the maximal activation of the transactivation activity of c-Fos and Fra-1." provenance.
- _5 wasQuotedFrom 12622723 provenance.