Topic 31
chromatin transcription regulatory transcriptional histone gene promoters dna regulation binding accessibility genome expression genes factors enhancer enhancers promoter factor elements sites epigenetic seq genomics rna cis chip wide tfs tf atac specific marks methylation regions motifs enriched polymerase genomic modifications active ctcf regulated repression biology repressive molecular nucleosome nucleosomes cells domains landscape occupancy regulators cell sequence regulate element heterochromatin at h3 organization epigenomic motif loci h3k27me3 activation accessible silencing lysine regulating h3k27ac start embryonic differentiation conserved dependent topologically ii activity polycomb complex role transcribed upstream initiation interactions architecture bind nuclear proximal distal mechanism regulator pol mechanisms chromosome co modification here
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