在一个单一的工作流中,PLAMseq使染色质相关蛋白质和蛋白质相互作用的蛋白质基因特征化成为可能
Lourdes González-Vinceiro1,2, Carmen Espejo-Serrano1,2, María Eugenia Soler-Oliva1
1Andalusian Centre for Regenerative Medicine and Molecular Biology (CABIMER), Universidad de Sevilla-CSIC-Universidad Pablo de Olavide-Junta de Andalucía, Sevilla, Spain.
Science advances
|November 7, 2025
概括
我们开发了近距离标记的亲和力净化质谱和测序 (PLAMseq) 来识别基因组位置和蛋白质相互作用体. PLAMseq成功地绘制了基因组H1SUMOylation的地图,揭示了SETDB1与SUMOylated基因组H1.2和H1.4.4的结合.
科学领域:
- 分子生物学分子生物学
- 蛋白质组学是指蛋白质组学.
- 基因组学就是基因组学.
背景情况:
- 染色体免疫沉 (ChIP) 和共免疫沉 (CoIP) 是研究蛋白质定位和相互作用的标准方法.
- 这些传统方法往往存在抗体敏感性和特异性的问题.
研究的目的:
- 开发一种新的方法,PLAMseq,同时识别基因组定位和相互作用蛋白质.
- 应用PLAMseq研究蛋白相互作用和修饰蛋白,包括SUMOylation.
- 为了验证PLAMseq使用RNA聚合酶II和CTCF等具有良好的特征的蛋白质.
主要方法:
- 靠近标记的亲和力净化质谱和测序 (PLAMseq) 是基于TurboID.开发的.
- PLAMseq将基因组位点识别和蛋白质组分析集成到一个工作流中.
- 该方法经过RNA聚合酶II和CTCF的验证,证明了它的稳定性和可重复性.
主要成果:
- 对于感兴趣的蛋白质,PLAMseq成功地确定了基因组位点和相互作用伙伴.
- 该方法应用于研究先前难以调查的过程 - - 基因组H1SUMOylation.
- 发现SETDB1结合了SUMOylated基因组H1.2和H1.4,这些基因组在重复的基因组区域中与H3K9me3共局.
结论:
- PLAMseq提供了一种强大而通用的方法来表征蛋白质相互作用和基因组定位.
- 这种方法克服了传统ChIP和CoIP分析的局限性.
- PLAMseq为基因组修饰及其调节机制提供了新的见解,以SETDB1与SUMOylated H1.1结合为例.
更多相关视频
24:02The ChroP Approach Combines ChIP and Mass Spectrometry to Dissect Locus-specific Proteomic Landscapes of Chromatin
Published on: April 11, 2014
18.7K
07:41Sequential Salt Extractions for the Analysis of Bulk Chromatin Binding Properties of Chromatin Modifying Complexes
Published on: October 2, 2017
8.8K
相关概念视频
02:36Chromatin Immunoprecipitation- ChIP
12.1K
Chromatin immunoprecipitation, or ChIP, is an antibody-based technique used to identify sites on DNA that bind to transcription factors of interest or histone proteins. It also helps determine the type of histone modifications such as acetylation, phosphorylation, or methylation.
Types of ChIP
ChIP can be divided into two types - X-ChIP and N-ChIP. X-ChIP involves in vivo cross-linking of histones and regulatory proteins to DNA, fragmenting the DNA by sonication, and isolating the protein-DNA...
Types of ChIP
ChIP can be divided into two types - X-ChIP and N-ChIP. X-ChIP involves in vivo cross-linking of histones and regulatory proteins to DNA, fragmenting the DNA by sonication, and isolating the protein-DNA...
12.1K
01:33Proteomics
9.2K
A proteome is the entire set of proteins that a cell type produces. We can study proteomes using the knowledge of genomes because genes code for mRNAs, and the mRNAs encode proteins. Although mRNA analysis is a step in the right direction, not all mRNAs are translated into proteins.
Proteomics is the study of proteomes' function. It involves the large-scale systematic study of the proteome to denote the protein complement expressed by a genome. Scientist Mark Wilkins coined the term...
Proteomics is the study of proteomes' function. It involves the large-scale systematic study of the proteome to denote the protein complement expressed by a genome. Scientist Mark Wilkins coined the term...
9.2K