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Human Spt6 Stimulates Transcription Elongation by RNA Polymerase II In Vitro

机译:人类Spt6体外通过RNA聚合酶II刺激转录延伸。

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Recent studies have suggested that Spt6 participates in the regulation of transcription by RNA polymerase II (RNAPII). However, its underlying mechanism remains largely unknown. One possibility, which is supported by genetic and biochemical studies of Saccharomyces cerevisiae, is that Spt6 affects chromatin structure. Alternatively, Spt6 directly controls transcription by binding to the transcription machinery. In this study, we establish that human Spt6 (hSpt6) is a classic transcription elongation factor that enhances the rate of RNAPII elongation. hSpt6 is capable of stimulating transcription elongation both individually and in concert with DRB sensitivity-inducing factor (DSIF), comprising human Spt5 and human Spt4. We also provide evidence showing that hSpt6 interacts with RNAPII and DSIF in human cells. Thus, in vivo, hSpt6 may regulate multiple steps of mRNA synthesis through its interaction with histones, elongating RNAPII, and possibly other components of the transcription machinery.
机译:最近的研究表明,Spt6参与RNA聚合酶II(RNAPII)的转录调控。但是,其基本机制仍然未知。酿酒酵母的遗传和生化研究支持的一种可能性是,Spt6影响染色质的结构。或者,Spt6通过与转录机制结合直接控制转录。在这项研究中,我们建立了人类Spt6(hSpt6)是经典的转录延伸因子,可提高RNAPII延伸率。 hSpt6能够单独和与包括人Spt5和人Spt4在内的DRB敏感性诱导因子(DSIF)协同刺激转录延长。我们还提供了证据,表明hSpt6与人类细胞中的RNAPII和DSIF相互作用。因此,在体内,hSpt6可能通过其与组蛋白的相互作用,延长RNAPII以及转录机制的其他可能成分来调节mRNA合成的多个步骤。

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