| Literature DB >> 11498546 |
M D Litt1, M Simpson, M Gaszner, C D Allis, G Felsenfeld.
Abstract
Methylation of histones at specific residues plays an important role in transcriptional regulation. Chromatin immunoprecipitation of dimethylated lysine 9 on histone H3 across 53 kilobases of the chicken beta-globin locus during erythropoiesis shows an almost complete anticorrelation between regions of elevated lysine 9 methylation and acetylation. Lysine 9 is methylated most over constitutive condensed chromatin and developmentally inactive globin genes. In contrast, lysine 4 methylation of histone H3 correlates with H3 acetylation. These results lead us to propose a mechanism by which the insulator in the beta-globin locus can protect the globin genes from being silenced by adjacent condensed chromatin.Entities:
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Year: 2001 PMID: 11498546 DOI: 10.1126/science.1064413
Source DB: PubMed Journal: Science ISSN: 0036-8075 Impact factor: 47.728