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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Drosophila Rtf1 functions in histone methylation, gene expression, and Notch signaling
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Drosophila Rtf1 functions in histone methylation, gene expression, and Notch signaling

机译:果蝇Rtf1在组蛋白甲基化,基因表达和Notch信号中起作用

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摘要

The Rtf1 subunit of the Pafi complex is required for proper monoubiquitination of histone H2B and methylation of histone H3 on lysines 4 (H3K4) and 79 in yeast Saccharomyces cerevisiae. Using RNAi, we examined the role of Rtf1 in histone methylation and gene expression in Drosophila melanogaster. We show that Drosophila Rtf1 (dRtf1) is required for proper gene expression and development. Furthermore, we show that RNAi-mediated reduction of dRtf1 results in a reduction in histone H3K4 trimethylation levels on bulk histones and chromosomes in vivo, indicating that the histone modification pathway via Rtf1 is conserved among yeast, Drosophila, and human. Recently, it was demonstrated that histone H3K4 methylation mediated via the E3 ligase Bre1 is critical for transcription of Notch target genes in Drosophila. Here we demonstrate that the dRtf1 component of the Paf1 complex functions in Notch signaling.
机译:Pafi复合物的Rtf1亚基是酿酒酵母中赖氨酸4(H3K4)和79上的组蛋白H2B正确单泛素化和组蛋白H3甲基化所必需的。使用RNAi,我们检查了Rtf1在果蝇中组蛋白甲基化和基因表达中的作用。我们显示果蝇Rtf1(dRtf1)是正确的基因表达和发展所必需的。此外,我们显示,RNAi介导的dRtf1的减少导致体内大量组蛋白和染色体上的组蛋白H3K4三甲基化水平降低,这表明通过Rtf1进行的组蛋白修饰途径在酵母,果蝇和人类中是保守的。最近,已证明经由E3连接酶Bre1介导的组蛋白H3K4甲基化对于果蝇中Notch靶基因的转录至关重要。在这里,我们证明了Paf1复合体的dRtf1组件在Notch信号中起作用。

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