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Expression of the INK4b/ARF/INK4a tumor suppressor locus in normal and cancerous cell growth is controlled by methylation of histone H3 at lysine 27 (H3K27me) as directed by the Polycomb group proteins. The antisense noncoding RNA ANRIL of the INK4b/ARF/INK4a locus is also important for expression of the protein-coding genes in cis, but its mechanism has remained elusive. Here we report that chromobox...
Histone lysine acetylation is central to epigenetic control of gene transcription. Bromodomains of chromosomal proteins function as acetyl-lysine (Kac) binding domains. However, how bromodomains recognize site-specific histones remains unanswered. Here, we report three three-dimensional solution structures of the bromodomains of the human transcriptional coactivators CREB-binding protein (CBP) and...
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