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Epithelial-mesenchymal transition (EMT) is a profound example of cell plasticity that is crucial for embryonic development and cancer. Although it has long been suspected that chromatin-based mechanisms play a role in this process, no master regulator that can specifically regulate EMT has been identified to date. Here, we show that H2A.Z can coordinate EMT by serving as either an activator or repressor...
Pygo and BCL9/Legless transduce the Wnt signal by promoting the transcriptional activity of β-catenin/Armadillo in normal and malignant cells. We show that human and Drosophila Pygo PHD fingers associate with their cognate HD1 domains from BCL9/Legless to bind specifically to the histone H3 tail methylated at lysine 4 (H3K4me). The crystal structures of ternary complexes between PHD, HD1, and two...
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