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BAF 复合物的固有无序性:在染色质重塑和疾病发生发展中的作用。

Intrinsic Disorder of the BAF Complex: Roles in Chromatin Remodeling and Disease Development.

机构信息

Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, 12901 Bruce B. Downs Blvd. MDC07, Tampa, FL 33612, USA.

Laboratory of New Methods in Biology, Institute for Biological Instrumentation of the Russian Academy of Sciences, Federal Research Center "Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences", Pushchino, 142290 Moscow Region, Russia.

出版信息

Int J Mol Sci. 2019 Oct 23;20(21):5260. doi: 10.3390/ijms20215260.

Abstract

The two-meter-long DNA is compressed into chromatin in the nucleus of every cell, which serves as a significant barrier to transcription. Therefore, for processes such as replication and transcription to occur, the highly compacted chromatin must be relaxed, and the processes required for chromatin reorganization for the aim of replication or transcription are controlled by ATP-dependent nucleosome remodelers. One of the most highly studied remodelers of this kind is the BRG1- or BRM-associated factor complex (BAF complex, also known as SWItch/sucrose non-fermentable (SWI/SNF) complex), which is crucial for the regulation of gene expression and differentiation in eukaryotes. Chromatin remodeling complex BAF is characterized by a highly polymorphic structure, containing from four to 17 subunits encoded by 29 genes. The aim of this paper is to provide an overview of the role of BAF complex in chromatin remodeling and also to use literature mining and a set of computational and bioinformatics tools to analyze structural properties, intrinsic disorder predisposition, and functionalities of its subunits, along with the description of the relations of different BAF complex subunits to the pathogenesis of various human diseases.

摘要

长达两米的 DNA 在每个细胞的细胞核中压缩成染色质,这是转录的一个重要障碍。因此,为了发生复制和转录等过程,高度浓缩的染色质必须放松,并且需要染色质重组的过程以达到复制或转录的目的,这是由 ATP 依赖性核小体重塑因子控制的。其中研究最多的重塑因子之一是 BRG1 或 BRM 相关因子复合物(BAF 复合物,也称为 Switch/sucrose non-fermentable (SWI/SNF) 复合物),它对于真核生物中基因表达和分化的调控至关重要。染色质重塑复合物 BAF 的结构高度多态性,包含由 29 个基因编码的 4 到 17 个亚基。本文的目的是概述 BAF 复合物在染色质重塑中的作用,并利用文献挖掘和一系列计算和生物信息学工具来分析其亚基的结构特性、固有无序倾向和功能,以及描述不同 BAF 复合物亚基与各种人类疾病发病机制的关系。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/687a/6862534/994d1bb131dc/ijms-20-05260-g001.jpg

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