Abstract: A variety of epigenetic modifications including post-translational modifications (PTMs) on histone tails regulate gene expression and have profound effects on cell signaling and human disease. N-terminal histone tails can have a variety of modifications, such as phosphorylation, methylation and acetylation at specific amino acid residues which are conserved throughout eukaryotes and function by altering chromatin […]
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Abstract: Research in the field of epigenetics has grown at a rapid pace since the discovery of the first histone acetyltransferase enzymes 18 years ago. Since then, significant advances have been made in our understanding of the basic mechanisms of epigenetics (histone acetylation, histone methylation, chromatin remodeling and DNA methylation) and the impact of epigenetic […]
Abstract: Gene expression is regulated by a combination of transcription factor binding and the distribution of epigenetic modifications across regulatory regions. Much of what we know about the epigenome and gene regulation stems from our ability to determine the genome-wide distribution of histone modifications and transcription factors using chromatin immunoprecipitation followed by next generation sequencing […]
Abstract Elucidation of molecular mechanisms of genome functions such as transcription and epigenetic regulation requires identification of components mediating the genome functions. To this end, we recently developed the locus-specific chromatin immunoprecipitation (ChIP) (locus-specific ChIP) technologies to identify molecules interacting with a given genomic region of interest in vivo. Locus-specific ChIP consists of insertional ChIP […]
Presenter: Silvana Konermann, Graduate Student in Dr Feng Zhang’s Lab at Massachusetts Institute of Technology Systematic interrogation of gene function requires the ability to perturb gene expression in a robust and generalizable manner. The ease and scalability of the CRISPR-Cas9 system potentially enables systematic, genome-scale perturbation, but the magnitude of transcriptional up-regulation achieved by the first generation of Cas9 transcriptional […]