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首页> 外文期刊>Acta crystallographica.Section D. Biological crystallography >Structure-function studies of the RNA polymerase II elongation complex
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Structure-function studies of the RNA polymerase II elongation complex

机译:RNA聚合酶的结构研究二世伸长复杂

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RNA polymerase II (Pol II) is the eukaryotic enzyme that is responsible for transcribing all protein-coding genes into messenger RNA (mRNA). The mRNA-transcription cycle can be divided into three stages: initiation, elongation and termination. During elongation, Pol II moves along a DNA template and synthesizes a complementary RNA chain in a processive manner. X-ray structural analysis has proved to be a potent tool for elucidating the mechanism of Pol II elongation. Crystallographic snapshots of different functional states of the Pol II elongation complex (EC) have elucidated mechanistic details of nucleotide addition and Pol II trans-location. Further structural studies in combination with in vitro transcription experiments led to a mechanistic understanding of various additional features of the EC, including its inhibition by the fungal toxin a-amanitin, the tunability of the active site by the elongation factor TFIIS, the recognition of DNA lesions and the use of RNA as a template.
机译:RNA聚合酶II (Pol II)是真核生物酶,负责抄录蛋白质编码基因信使核糖核酸(mRNA)。mRNA-transcription周期可分为三个阶段:起始、延伸和终止。沿着DNA模板和综合互补的RNA链前进的方式。x射线结构分析已经被证明是一个波尔的机理问题强有力的工具二世伸长。波尔的不同的功能状态伸长复杂(EC)阐明机械的核苷酸加法和的细节波尔II trans-location。结合体外转录实验导致了机械的理解电子商务的各种附加功能,包括其抑制真菌毒素a-amanitin,的活性位点的可调谐性TFIIS伸长因素,识别DNA损伤和RNA为模板的使用。

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