Mus81-Eme1是霍利代交叉路口解决方案的重要组成部分
M N Boddy1, Pierre-Henri L Gaillard, W H McDonald
1Department of Molecular Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA.
Cell
|November 24, 2001
概括
Mus81-Eme1内核酶分解复杂的DNA结构,称为霍莱德连接点,这些连接点对半分裂和DNA修复至关重要. 这种裂变酵母酶对于在介质重组过程中解决这些结点至关重要.
科学领域:
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
- 修复DNA的修复DNA的修复
背景情况:
- Mus81是一种裂变酵母蛋白,同类于XPF,这是ERCC1-XPF核酸切除修复内核酶的一个子单元.
- 肌肉81对变和管理停滞不前的复制分叉至关重要.
- 霍莱德连接的分辨率,这是X形DNA结构,对于这些过程至关重要.
研究的目的:
- 调查Mus81及其相关蛋白Eme1在解决霍莱德连接的功能.
- 确定Mus81-Eme1复合体在介质重组中的作用.
主要方法:
- 生物化学试验以表征Mus81和Eme1.1的内核酶活性.
- 在裂变酵母中进行基因分析,以评估Mus81和Eme1在变和DNA修复中的作用.
- 补充研究使用一种细菌的霍莱德结结溶酶来拯救肌肉中介性缺陷.
主要成果:
- Mus81 和 Eme1 形成了一个内核酶复合体,该复合体将霍莱德连接分解成线性双重DNA.
- 介质重组的晚期阶段需要Mus81-Eme1复合体.
- 细菌的霍莱德结结溶酶可以挽救由Mus81.1.缺失引起的介质缺陷.
结论:
- Mus81和Eme1是裂变酵母中核霍莱德连接溶酶的基本子单位.
- 这种酶在分离过程中在解决DNA结构方面发挥着关键作用.
- 这些发现提供了强有力的证据,证明Mus81-Eme1的功能是介质过程中的关键溶酶.
更多相关视频
11:27Single-Molecule Förster Resonance Energy Transfer Methods for Real-Time Investigation of the Holliday Junction Resolution by GEN1
Published on: September 18, 2019
10.1K
10:08Determining the Role of Maternally-Expressed Genes in Early Development with Maternal Crispants
Published on: December 21, 2021
1.8K
相关概念视频
Solvents
58.5K
A solvent is a substance, most often a liquid, that can dissolve other substances. Here, the substance being dissolved is called a solute. When a solvent and a solute combine, they form a solution - a homogenous mixture of both the solvent and the solute. Water is a universal biological solvent. Its polar structure allows it to dissolve many other polar compounds. The ability of water to dissolve is governed by a balance between water molecules binding to each other and binding to the solute.
A...
A...
58.5K
Aqueous Solutions and Heats of Hydration
14.3K
Water and other polar molecules are attracted to ions. The electrostatic attraction between an ion and a molecule with a dipole is called an ion-dipole attraction. These attractions play an important role in the dissolution of ionic compounds in water.
When ionic compounds dissolve in water, the ions in the solid separate and disperse uniformly throughout the solution because water molecules surround and solvate the ions, reducing the strong electrostatic forces between them. This process...
When ionic compounds dissolve in water, the ions in the solid separate and disperse uniformly throughout the solution because water molecules surround and solvate the ions, reducing the strong electrostatic forces between them. This process...
14.3K
Henderson-Hasselbalch Equation
63.1K
The ionization-constant expression for a solution of a weak acid can be written as:
63.1K
EDTA: Auxiliary Complexing Reagents
1.6K
EDTA titrations are usually carried out in highly basic conditions, where the fully deprotonated form of EDTA, Y4−, actively complexes with the free metal ions in the solution. Several metal ions precipitate as hydrous oxide (hydroxides, oxides, or oxyhydroxides) under these conditions, lowering the concentration of free metal ions in the solution. For this reason, auxiliary complexing agents or ligands such as ammonia, tartrate, citrate, or triethanolamine are used in EDTA titrations to...
1.6K
A Single-Component System
69
In the field of chemistry, the terms "component" and "phase" hold significant importance. A component refers to a chemically distinct substance in a system that has specific properties. It is chemically homogeneous, meaning it has the same properties throughout. For example, in a mixture of salt and water, both salt and water are considered separate components because they have different chemical properties.On the other hand, a phase is a form of matter that has a consistent chemical...
69
Nonideal Two-Component Liquid Solutions
137
Nonideal liquid solutions, also known as real solutions, do not strictly follow Raoult's law. Raoult's law is a rule of thumb in physical chemistry. However, not all mixtures adhere to this law due to varying molecular interactions. For example, in an acetone/chloroform solution, the individual vapor pressures of the components are lower than expected, resulting in a total vapor pressure below that predicted by Raoult's law, causing a negative deviation.On the other hand, in an ethanol/water...
137
