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  1. ...). Acetylation marks like H3K9ac and H3K27ac and H3K4 methylation are enriched at promoters of actively transcribed SM genes, promoting RNA polymerase II recruitment and transcription initiation (Liu et al. 2015). H3K27 methylation, deposited by PRC2, represses SM clusters in facultative heterochromatin under...
  2. ...profiles for H3K4me3 (green) and H3K27me3 (red) in various cell types. Also shown are read density profiles for gene expression (blue; RNA-seq). (HSCs) hematopoietic stem cells; (PBMCs) peripheral blood mononuclear cells; (HMECs) human mammary epithelial cells; (NHEKs) normal human embryonic kidneys...
  3. ...importance of each of those enzymes appears to be cell type–specific (Bennett et al. 2017; Farhangdoost et al. 2021; Li et al. 2021a). In mESCs, it has been shown that depletion of the NSD1 histone methyltransferase by siRNA reduces the levels of H3K36me2 and alters the patterns of lysine 27 methylation...
  4. ...opposite (Fig. 2A). These findings clearly highlight both the canonical and paradoxical impact of SWI/SNF and NuRD remodelers on gene expression.View larger version: In this window In a new window Figure 2. Mutually exclusive binding of RNA Pol II and PRC2 explains the paradox in the antagonistic...
  5. ...are frequently associated with DH sites To exploit the relationship between the gene expression levels and DH sites, we conducted massively parallel pyrosequencing of mRNAs (RNA-seq) using the same seedling and callus tissues that were used for DNase-seq. Two biological replicates of each tissue were applied...
  6. ...of the gene by the attraction of PRC2/H3K27 by the nascent RNAs produced (Zhao et al. 2008; Lee 2009; Tsai et al. 2010) and deacetylation through resident H3K36me3 and its recruitment of HDACs (Carrozza et al. 2005; Joshi and Struhl 2005; Keogh et al. 2005). The purpose of zebrafish sperm chromatin Loci...
  7. ...inhibits gene transcription by impeding or poising the occupancy of RNA polymerase II (van Kruijsbergen et al. 2015). Transcriptional dynamics during development and disease initiation have been attributed to H3K27me3 (Simon and Kingston 2009; Sexton et al. 2012; Jiang et al. 2013; Pinello et al. 2014...
  8. .... The interaction of PRC2 with RNA or chromatin is mutually antagonistic. Genome Res 26: 896–907. Bier E, De Robertis EM. 2015. EMBRYO DEVELOPMENT. BMP gradients: a paradigm for morphogen-mediated developmental patterning. Science 348: aaa5838. Bonn S, Zinzen RP,Girardot C, Gustafson EH, Perez-Gonzalez A, Delhomme...
  9. ...performed chromatin immunoprecipitation (ChIP) followed by high-throughput sequencing (ChIP-seq) in human T cells, using antibodies against 20 human histone lysine and arginine methylations, as well as histone variant H2A.Z, RNA polymerase II (Pol II), and the insulator binding protein CTCF, to map...
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