相关实验视频
Updated: Sep 11, 2025
12:01
3' End Sequencing Library Preparation with A-seq2
Published on: October 10, 2017
10.7K
如此接近但如此遥远:通过DNMT3A和DNMT3B进行明显的侧面序列识别
Ayşe Berçin Barlas1,2, Ezgi Karaca3,4
1Omics and Computational Biology Program, Izmir Biomedicine and Genome Center, Izmir, Türkiye.
Communications biology
|August 13, 2025
概括
尽管有很高的序列相似性,但DNA甲基转移酶DNMT3A和DNMT3B表现出不同的基质偏好. 对比动力学分析显示,DNMT3A使用了刚性,特定的相互作用,而DNMT3B使用了灵活的相互作用,以获得更广泛的耐受性.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- 基因甲基转移酶 (DNMTs) 对于新型CpG甲基化至关重要.
- DNMT3A和DNMT3B是具有相似的催化域但具有不同的生物学作用和基因组向的对象.
- 了解它们的序列特异性是破译表观遗传调节的关键.
研究的目的:
- 阐明DNMT3A和DNMT3B的不同侧面序列偏好的机制基础.
- 分析这些酶中的基和形状读取机制的原子细节.
- 提供关于密切相关的酶如何实现分离基质识别的见解.
主要方法:
- DNMT3A和DNMT3B复合物的全原子分子动力学 (MD) 模拟.
- 模拟涵盖了16微秒的酶基质相互作用.
- 开发和应用一个比较动力学分析 (CDA) 框架.
主要成果:
- DNMT3A通过刚性联网和形状受约束的静电 anchoring 展现了序列特异性.
- 通过更灵活和分布式的交互接口,DNMT3B表现出更广泛的基板耐受性.
- 这项研究提供了第一个对DNMT3酶中的形状读数的系统分析.
结论:
- 在DNMT3酶中,侧翼序列的特异性是动态编码的,尽管蛋白质的相似性很高.
- 不同的识别策略解释了DNMT3A和DNMT3B的独特基因组向和生物学作用.
- 这些发现为设计对类特异性蛋白质-DNA相互作用提供了基础.
更多相关视频
09:04Sequence-specific and Selective Recognition of Double-stranded RNAs over Single-stranded RNAs by Chemically Modified Peptide Nucleic Acids
Published on: September 21, 2017
9.6K
09:39DNA Fingerprinting of Mycobacterium leprae Strains Using Variable Number Tandem Repeat VNTR - Fragment Length Analysis FLA
Published on: July 15, 2011
27.3K
相关概念视频
03:21RNA-seq
10.4K
RNA sequencing, or RNA-Seq, is a high-throughput sequencing technology used to study the transcriptome of a cell. Transcriptomics helps to interpret the functional elements of a genome and identify the molecular constituents of an organism. Additionally, it also helps in understanding the development of an organism and the occurrence of diseases.
Before the discovery of RNA-seq, microarray-based methods and Sanger sequencing were used for transcriptome analysis. However, while...
Before the discovery of RNA-seq, microarray-based methods and Sanger sequencing were used for transcriptome analysis. However, while...
10.4K
03:00Next-generation Sequencing
92.6K
The first human genome sequencing project cost $2.7 billion and was declared complete in 2003, after 15 years of international cooperation and collaboration between several research teams and funding agencies. Today, with the advent of next-generation sequencing technologies, the cost and time of sequencing a human genome have dropped over 100 fold.
Next-Generation Sequencing Methods
Although all next-generation methods use different technologies, they all share a set of standard features....
Next-Generation Sequencing Methods
Although all next-generation methods use different technologies, they all share a set of standard features....
92.6K