JUNO-IZUMO1复合的分子动力学表明,在受精过程中存在生物学相关的机制
Paulina Pacak1, Carleen Kluger2,3, Viola Vogel4
1Department of Health Sciences and Technology, ETH Zurich, Zurich, Switzerland.
Scientific reports
|November 22, 2023
概括
分子动力学 (MD) 模拟揭示了精子蛋白IZUMO1和卵子蛋白JUNO如何相互作用以启动受精. 这项研究提供了对生育调节的新见解以及对抗不孕症的潜在策略.
科学领域:
- 生殖生物学 生殖生物学
- 结构生物学 结构生物学
- 计算生物物理学的计算生物物理学
背景情况:
- 在受精期间,JUNO-IZUMO1相互作用对精子-卵膜融合至关重要.
- 启动融合和调节JUNO功能的精确分子机制仍然不清楚.
研究的目的:
- 使用全原子分子动力学 (MD) 阐明JUNO-IZUMO1结合的动态结构机制.
- 研究JUNO-IZUMO1相互作用如何调节生育能力和叶酸结合.
主要方法:
- 用全原子分子动力学 (MD) 模拟来分析JUNO-IZUMO1复合体.
- 模拟探索了点突变和Zn2+离子在JUNO-IZUMO1接口上的影响.
- MD用于研究JUNO与叶酸在孤立和复杂状态的相互作用.
主要成果:
- JUNO-IZUMO1接口的特点是动态的,短暂的非共价相互作用.
- 点突变和 Zn2+ 离子破坏了 JUNO-IZUMO1 综合体的稳定,而 Zn2+ 诱导了非结合性 IZUMO1 构造.
- 与IZUMO1的JUNO复合促进了叶酸的结合,这表明了调节叶酸相互作用的机制.
结论:
- MD模拟为JUNO-IZUMO1复杂动态如何调节生育提供了新的假设.
- 这些发现表明,过渡性离子在通过IZUMO1形状变化阻断多种子症方面发挥了作用.
- 这项研究揭示了JUNO通过IZUMO1相互作用对叶酸结合调节的潜在机制.
更多相关视频
05:11In Vivo Visualization of Calcium Transients during Fertilization and Early Development in C. elegans
Published on: July 12, 2024
395
08:06Author Spotlight: Evaluating the Impact of Immediate Partial Removal of Cumulus-Oocyte Complexes on Fertilization Efficiency and Embryo Quality
Published on: October 18, 2024
445
相关概念视频
01:38Fertilization
71.1K
During fertilization, an egg and sperm cell fuse to create a new diploid structure. In humans, the process occurs once the egg has been released from the ovary, and travels into the fallopian tubes. The process requires several key steps: 1) sperm present in the genital tract must locate the egg; 2) once there, sperm need to release enzymes to help them burrow through the protective zona pellucida of the egg; and 3) the membranes of a single sperm cell and egg must fuse, with the sperm...
71.1K
01:09Complexation Equilibria: Factors Influencing Stability of Complexes
379
In complexation reactions, metal cations are the electron pair acceptors, and the ligands are the electron pair donors. The stability of the metal complexes depends primarily on the complexing ability of the central metal ion and the nature of the ligands. Generally, the complexing ability of the metal ion depends on the size and charge of the ion. As the metal ion size increases, the stability of the metal complexes decreases, provided that the valency of the metal ion and the ligands remain...
379
01:23Complexation Equilibria: Overview
716
Complexation reactions take place when dative or coordinate covalent bonds form between metal ions and ligands. The compounds formed in these reactions are called coordination compounds. The number of bonds formed between the metal ion and the ligands is called its coordination number. Generally, most metal ions in an aqueous solution are solvated by water molecules and thus exist as aqua complexes.
The equilibrium constant of the complexation reaction is represented as the formation constant...
The equilibrium constant of the complexation reaction is represented as the formation constant...
716
03:45Formation of Complex Ions
23.7K
A type of Lewis acid-base chemistry involves the formation of a complex ion (or a coordination complex) comprising a central atom, typically a transition metal cation, surrounded by ions or molecules called ligands. These ligands can be neutral molecules like H2O or NH3, or ions such as CN− or OH−. Often, the ligands act as Lewis bases, donating a pair of electrons to the central atom. These types of Lewis acid-base reactions are examples of a broad subdiscipline called coordination...
23.7K
01:24In Vitro Fertilization
298
In vitro fertilization (IVF) is a form of assisted reproductive technology where an egg is fertilized with sperm in a controlled laboratory environment before transferring the resulting embryo into the uterus. This process is designed to help individuals and couples experiencing difficulties conceiving.
The IVF process begins with ovarian stimulation, during which reproductive endocrinologists prescribe hormonal medications to stimulate the ovaries to produce multiple eggs instead of the single...
The IVF process begins with ovarian stimulation, during which reproductive endocrinologists prescribe hormonal medications to stimulate the ovaries to produce multiple eggs instead of the single...
298
01:19Complexation Equilibria: The Chelate Effect
523
In complexation reactions, metal atoms or cations interact with ligands to form donor-acceptor adducts called metal complexes. Ligands that bind through one donor site are monodentate, ligands with two donor sites are bidentate, and those with more than two donor sites are polydentate ligands. For example, ethylene diamine is a bidentate ligand that binds through two nitrogen donor atoms, forming a five-membered ring. EDTA is a polydentate ligand that binds through four oxygen and two nitrogen...
523