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-Structure paper
タイトル | Structural basis of recognition and destabilization of the histone H2B ubiquitinated nucleosome by the DOT1L histone H3 Lys79 methyltransferase. |
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ジャーナル・号・ページ | Genes Dev, Vol. 33, Issue 11-12, Page 620-625, Year 2019 |
掲載日 | 2019年6月1日 |
著者 | Seongmin Jang / Chanshin Kang / Han-Sol Yang / Taeyang Jung / Hans Hebert / Ka Young Chung / Seung Joong Kim / Sungchul Hohng / Ji-Joon Song / |
PubMed 要旨 | DOT1L is a histone H3 Lys79 methyltransferase whose activity is stimulated by histone H2B Lys120 ubiquitination, suggesting cross-talk between histone H3 methylation and H2B ubiquitination. Here, we ...DOT1L is a histone H3 Lys79 methyltransferase whose activity is stimulated by histone H2B Lys120 ubiquitination, suggesting cross-talk between histone H3 methylation and H2B ubiquitination. Here, we present cryo-EM structures of DOT1L complexes with unmodified or H2B ubiquitinated nucleosomes, showing that DOT1L recognizes H2B ubiquitin and the H2A/H2B acidic patch through a C-terminal hydrophobic helix and an arginine anchor in DOT1L, respectively. Furthermore, the structures combined with single-molecule FRET experiments show that H2B ubiquitination enhances a noncatalytic function of the DOT1L-destabilizing nucleosome. These results establish the molecular basis of the cross-talk between H2B ubiquitination and H3 Lys79 methylation as well as nucleosome destabilization by DOT1L. |
リンク | Genes Dev / PubMed:30923167 / PubMed Central |
手法 | EM (単粒子) |
解像度 | 6.8 - 7.3 Å |
構造データ | |
化合物 | ChemComp-SAM: |
由来 |
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キーワード | GENE REGULATION / histone / nucleosome / methylation |