関連する実験動画
Updated: Feb 8, 2026
08:31
Detection of Protein S-Acylation using Acyl-Resin Assisted Capture
Published on: April 10, 2020
10.7K
核群動力学とデウビキチナーゼの作用を評価するためのタンパク質リシンアサイレーションのためのヒドラジドミミックス
Shridhar Bhat1,2, Yousang Hwang1, Matthew D Gibson3
1Department of Pharmacology and Molecular Sciences , Johns Hopkins University School of Medicine , Baltimore , Maryland 21205 , United States.
Journal of the American Chemical Society
|July 12, 2018
まとめ
研究者はアシル・ライシン改変の タンパク質を模倣する新しい方法を開発しました この技術は,これらの重要な翻訳後の修正を持つタンパク質の機能と構造を研究するのに役立ちます.
科学分野:
- 生物化学
- 分子生物学
- エピジェネティクス
背景:
- タンパク質におけるアチルライシン (acyl-Lys) 変異は広く知られても,理解は薄い.
- サイト特異的に改変された形態の生産が困難であるため,アシル-リスタンパク質の研究は困難である.
研究 の 目的:
- サイト固有のアシルライシンをタンパク質に作り出す方法の開発
- これらのミミクスを利用して,アシル-ライスの改変の機能的および構造的役割を調査する.
主な方法:
- システインアルキル化による戦略を用いて,アシル-ライスの改変をヒドラジドで模倣したものを導入した.
- アセチル-ライス,2-ヒドロキシイソブチリル-ライス,およびユビキビティル-ライスのミミクが生成された.
- 機能研究のために,改変したヒストンタンパク質を核細胞に再構成した.
主要な成果:
- 特定の抗体によって認識されたアシル・ライスを成功裏に導入した.
- ニュクレオソームの動態と安定性は,改変の種類と場所に基づいて分析された.
- ユビキチルライシンミミックは,SAGAモジュールを含むデウビキチン化酵素相互作用を研究するために使用されました.
結論:
- アチルライシンミミックは,タンパク質の機能,構造,および調節を研究するための貴重なツールを提供します.
- この戦略は,様々なアシルライシン・ポスト翻訳的改変の役割に関する研究を容易にする.
関連する概念動画
02:54Nucleosome Remodeling
11.2K
Nucleosomes are the basic units of chromatin compaction. Each nucleosome consists of the DNA bound tightly around a histone core, which makes the DNA inaccessible to DNA binding proteins such as DNA polymerase and RNA polymerase. Hence, the fundamental problem is to ensure access to DNA when appropriate, despite the compact and protective chromatin structure.
Nucleosome remodeling complex
Eukaryotic cells have specialized enzymes called ATP-dependent nucleosome remodeling enzymes. These enzymes...
Nucleosome remodeling complex
Eukaryotic cells have specialized enzymes called ATP-dependent nucleosome remodeling enzymes. These enzymes...
11.2K
02:33The Nucleosome
18.9K
DNA in a human cell is almost 2m long and it is packed inside a tiny nucleus that is only a few microns in diameter. The level of compaction of DNA inside the nucleus is astonishing. It is organized into several sequentially higher levels of compaction to fit into such a tiny space. The most compact form of DNA is a chromosome that can be seen under a microscope in a dividing cell.
DNA is wound twice around a protein complex called histone core, that consist of 8 histone proteins. This complex...
DNA is wound twice around a protein complex called histone core, that consist of 8 histone proteins. This complex...
18.9K
02:33The Nucleosome
5.1K
5.1K
01:19The Nucleosome
4.1K
Human DNA is almost two meters long. However, it is compressed inside a tiny nucleus measuring only a few microns in diameter. To make this degree of compaction possible, DNA is organized into several sequential levels so that it can fit into such a tiny space. The most compact form of DNA is a chromosome that can be seen under a microscope in a dividing cell.
In a chromosome, DNA is wound twice around a protein complex called a histone octamer core, which consists of 8 histone proteins. This...
In a chromosome, DNA is wound twice around a protein complex called a histone octamer core, which consists of 8 histone proteins. This...
4.1K
02:10The Nucleosome Core Particle
14.5K
Nucleosomes are the DNA-histone complex, where the DNA strand is wound around the histone core. The histone core is an octamer containing two copies of H2A, H2B, H3, and H4 histone proteins.
The paradox
Nucleosomes, paradoxically, perform two opposite functions simultaneously. On the one hand, their main responsibility is to protect the delicate DNA strands from physical damage and help achieve a higher compaction ratio. While on the other hand, they must allow polymerase enzymes to access DNA...
The paradox
Nucleosomes, paradoxically, perform two opposite functions simultaneously. On the one hand, their main responsibility is to protect the delicate DNA strands from physical damage and help achieve a higher compaction ratio. While on the other hand, they must allow polymerase enzymes to access DNA...
14.5K
01:12The Nucleosome Core Particle
2.4K
Nucleosomes are the DNA-histone complex, where the DNA strand is wound around the histone core. The histone core is an octamer containing two copies of H2A, H2B, H3, and H4 histone proteins.
Nucleosomes, paradoxically, perform two opposite functions simultaneously. On the one hand, their primary aim is to protect the delicate DNA strands from physical damage and help achieve a higher compaction ratio. On the other hand, they must allow polymerase enzymes to access histone-bound DNA during...
Nucleosomes, paradoxically, perform two opposite functions simultaneously. On the one hand, their primary aim is to protect the delicate DNA strands from physical damage and help achieve a higher compaction ratio. On the other hand, they must allow polymerase enzymes to access histone-bound DNA during...
2.4K