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Role Reversal: Are Transcription Factors Responsible for Heterochromatin Formation?

Regions of eukaryotic chromosomes are classified into two distinct groups: euchromatin, which is generally less compacted and contains actively transcribed genes, and heterochromatin, which is typically more compacted and contains silent genes and the majority of the repeated DNA elements.  Transcription factors are generally thought of as proteins that are …

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Chromatin Density Matters

Histone methylation mediated by polycomb repressive complex 2 (PRC2) is involved in numerous biological processes, including cell differentiation, proliferation, and stem cell plasticity. Enhancer of Zeste homolog 2 (Ezh2), a subunit of PRC2, is a histone methyltransferase that specifically methylates histone H3 on lysine 27 (H3K27) and regulates polycomb gene …

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Prediction of polyadenylation site usage from epigenetic modifications

In this computational study, the authors explore several links between epigenetic factors (including DNA methylation, nucleosomal association, and histone modifications) and the usage of polyadenylation (poly(A)) sites in transcribed messages.

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