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Symmetrical modification within a nucleosome is not required globally for histone lysine methylation
Two copies of each core histone exist in every nucleosome; however, it is not known whether both histones within a nucleosome are required to be symmetrically methylated at the same lysine residues. We report that for most lysine methylation states, wild-type histones paired with mutant, unmethylatable histones in mononucleosomes have comparable methylation levels to bulk histones. Our results indicate that symmetrical histone methylation is not required on a global scale. However, wild-type H4 histones paired with unmethylatable H4K20R histones showed reduced levels of H4K20me2 and H4K20me3, suggesting that some fractions of these modifications might exist symmetrically, and enzymes mediating these modifications might, to some extent, favour nucleosome substrates with premethylated H4K20. 相似文献
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Acetylation of nucleosomal histones by p300 facilitates transcription from tax-responsive human T-cell leukemia virus type 1 chromatin template 下载免费PDF全文
Lu H Pise-Masison CA Fletcher TM Schiltz RL Nagaich AK Radonovich M Hager G Cole PA Brady JN 《Molecular and cellular biology》2002,22(13):4450-4462
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