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Maintenance of a functional higher order chromatinstructure: The role of the nuclear matrix in normaland disease states

机译:维持功能性高阶染色质结构:核基质在正常和疾病状态中的作用

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The ordered packaging of DNA within the nucleus of somatic cells reflects a dynamic supportive structure that facilitates stable transcription interrupted by intermittent cycles of extreme condensation. This dynamic mode of packing and unpacking chromatin is intimately linked to the ability of the genome to specifically complex with both histones and non-histone proteins. Understanding the underlying mechanism that governs the formation of higher order chromatin structures is a key to understanding how local architecture modulates transcription. In part, the formation of these structures appears to be regulated through genomic looping that is dynamically mediated by attachment to the nuclear scaffold/matrix at S/MARs, i.e., Scaffold/Matrix Attachment Regions. Although the mechanism guiding the formation and use of these higher-ordered structures remains unknown, S/MARs continue toreveal a multitude of roles in development and the pathogenesis of disease.
机译:DNA在体细胞核内的有序包装反映了一种动态的支持结构,该结构促进了稳定的转录,该转录被极端凝结的间歇循环打断。这种将染色质装箱和拆箱的动态模式与基因组与组蛋白和非组蛋白特异性结合的能力紧密相关。理解控制高级染色质结构形成的基本机制是理解局部结构如何调节转录的关键。这些结构的形成似乎部分是通过基因组环调控的,而基因组环是通过在S / MAR处附着于核支架/基质(即支架/基质附着区)而动态介导的。尽管指导这些高级结构的形成和使用的机制仍是未知的,但S / MARs在疾病的发展和发病机理中继续发挥着重要作用。

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