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[G4四链体与基因组不稳定性]

[G4-quadruplexes and genome instability].

作者信息

Zybaĭlov B L, Sherpa M D, Glazko G V, Raney K D, Glazko V I

出版信息

Mol Biol (Mosk). 2013 Mar-Apr;47(2):224-31. doi: 10.7868/s0026898413020183.

DOI:10.7868/s0026898413020183
PMID:23808155
Abstract

A comparative analysis in silico of distribution of nucleotide sequences that predispose to formation of non-canonical DNA structure of G-quadruplexes, closely related with gene expression regulation and double strand DNA breaks, within vertebrata and yeast nuclear and mitochondrial genomes was carried out. Data on preferable localization of potential quadruplexes within non-coding sequences, their evolutionary conservation, and existing homology between them in mitochondrial and nuclear genomes were obtained. A possible interrelation between quadruplexes, Pif1 helicase and genomic instability is discussed.

摘要

对脊椎动物和酵母的核基因组与线粒体基因组中,与基因表达调控及双链DNA断裂密切相关的、易于形成非经典G-四链体DNA结构的核苷酸序列分布进行了计算机模拟比较分析。获得了关于潜在四链体在非编码序列中的优先定位、其进化保守性以及线粒体和核基因组之间现存同源性的数据。讨论了四链体、Pif1解旋酶与基因组不稳定性之间可能的相互关系。

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[G4-quadruplexes and genome instability].[G4四链体与基因组不稳定性]
Mol Biol (Mosk). 2013 Mar-Apr;47(2):224-31. doi: 10.7868/s0026898413020183.
2
Complementary roles of Pif1 helicase and single stranded DNA binding proteins in stimulating DNA replication through G-quadruplexes.Pif1 解旋酶和单链 DNA 结合蛋白在通过 G-四链体刺激 DNA 复制中的互补作用。
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Pif1 is essential for efficient replisome progression through lagging strand G-quadruplex DNA secondary structures.Pif1 对于复制体在滞后链 G-四链体 DNA 二级结构中有效地推进是必需的。
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Yeast Sub1 and human PC4 are G-quadruplex binding proteins that suppress genome instability at co-transcriptionally formed G4 DNA.酵母Sub1和人类PC4是G-四链体结合蛋白,可抑制共转录形成的G4 DNA处的基因组不稳定性。
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Yeast Genome Maintenance by the Multifunctional PIF1 DNA Helicase Family.多功能PIF1 DNA解旋酶家族对酵母基因组的维持作用
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Eukaryotic Pif1 helicase unwinds G-quadruplex and dsDNA using a conserved wedge.真核生物 Pif1 解旋酶使用保守的楔子解开 G-四链体和双链 DNA。
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The essential Schizosaccharomyces pombe Pfh1 DNA helicase promotes fork movement past G-quadruplex motifs to prevent DNA damage.至关重要的粟酒裂殖酵母Pfh1 DNA解旋酶促进复制叉越过G-四链体基序以防止DNA损伤。
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DNA-unwinding activity of Pif1 is modulated by thermal stability, folding conformation, and loop lengths of G-quadruplex DNA.Pif1 的 DNA 解旋活性受热稳定性、折叠构象和 G-四链体 DNA 环长度的调节。
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Molecular mechanism of G-quadruplex unwinding helicase: sequential and repetitive unfolding of G-quadruplex by Pif1 helicase.G-四链体解旋酶的分子机制:Pif1解旋酶对G-四链体的顺序性和重复性解折叠
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Human Pif1 helicase is a G-quadruplex DNA-binding protein with G-quadruplex DNA-unwinding activity.人类 Pif1 解旋酶是一种与 G-四链体 DNA 结合的蛋白,具有 G-四链体 DNA 解旋活性。
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Structure, Properties, and Biological Relevance of the DNA and RNA G-Quadruplexes: Overview 50 Years after Their Discovery.DNA和RNA G-四链体的结构、性质及生物学相关性:发现50年后的综述
Biochemistry (Mosc). 2016 Dec;81(13):1602-1649. doi: 10.1134/S0006297916130034.