PinMyMetal:一种混合学习系统,可以准确地模拟宏分子中的过渡金属结合点
Huihui Zhang1,2,3, Juanhong Zhong2,3, Michal Gucwa4,5
1Department of Cardiology, First Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, People's Republic of China.
Nature communications
|March 29, 2025
概括
PinMyMetal (PMM) 准确地预测了蛋白质中的过渡金属离子位置,优于现有的方法. 这种机器学习工具有助于理解蛋白质功能和设计新型金属蛋白.
科学领域:
- 生物化学 生化学
- 结构生物学 结构生物学
- 计算生物学 计算生物学
背景情况:
- 金属离子对蛋白质功能至关重要,影响结构,催化和调节.
- 准确地建模过渡金属离子,特别是在动态调节站点,是一个重要的计算挑战.
研究的目的:
- 介绍PinMyMetal (PMM),一种新的混合机器学习系统,用于预测宏分子中的过渡金属离子定位和协调环境.
- 提高对依赖金属离子的蛋白质功能的理解和工程.
主要方法:
- 开发了PinMyMetal (PMM),这是一种预测过渡金属定位和环境的机器学习系统,专注于四面体和八面体几何.
- 通过CheckMyMetal服务器对各种蛋白质结构来源 (预测,冷EM,晶体学) 进行集成的交互验证.
- 根据当地结构和物理化学特征,独立于同类结构的预测地点分配的确定性得分.
主要成果:
- 与现有的预测器相比,PMM在预测金属离子联体和坐标方面表现出卓越的准确性.
- 在预测调节部位 (0.36 Å 中位偏差),催化部位 (0.33 Å) 和结构部位 (0.19 Å) 方面取得了高准确性.
- 该系统可以查询蛋白质序列,以描述可能的过渡金属定位.
结论:
- PMM提供了一个强大的,准确的,计算效率高的方法来识别和验证蛋白质中的功能金属结合点.
- 方便对残留物进行明智的评估,并有助于金属蛋白的合理设计.
- 检查MyMetal服务器扩展了PMM对各种结构数据的实用性,支持蛋白质功能推断和工程.
相关概念视频
Bonding in Metals
Metallic bonds are formed between two metal atoms. A simplified model to describe metallic bonding has been developed by Paul Drüde called the “Electron Sea Model”.
Metal-Ligand Bonds
The hemoglobin in the blood, the chlorophyll in green plants, vitamin B-12, and the catalyst used in the manufacture of polyethylene all contain coordination compounds. Ions of the metals, especially the transition metals, are likely to form complexes.
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
Valence Bond Theory
Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...
Ligand Binding Sites
Proteins are dynamic macromolecules that carry out a wide variety of essential processes; however, the activities of most proteins depend on their interactions with other molecules or ions, known as ligands.
Protein-ligand interactions are quite specific; even though numerous potential ligands surround a cellular protein at any given time, only a particular ligand can bind to that protein. Moreover, a ligand binds only to a dedicated area on the surface of the protein, known as the...
Protein-ligand interactions are quite specific; even though numerous potential ligands surround a cellular protein at any given time, only a particular ligand can bind to that protein. Moreover, a ligand binds only to a dedicated area on the surface of the protein, known as the...
Conserved Binding Sites
Many proteins’ biological role depends on their interactions with their ligands, small molecules that bind to specific locations on the protein known as ligand-binding sites. Ligand-binding sites are often conserved among homologous proteins as these sites are critical for protein function.
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally analyses the...
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally analyses the...
The Equilibrium Binding Constant and Binding Strength
The equilibrium binding constant (Kb) quantifies the strength of a protein-ligand interaction. Kb can be calculated as follows when the reaction is at equilibrium:


