通过重权学习 (PEARL) 进行个性化能量适应,用于内在无序蛋白质的力场
Xiaoyue Ji1, Junjie Zhu1, Bozitao Zhong1
1State Key Laboratory of Microbial metabolism, Joint International Research Laboratory of Metabolic & Developmental Sciences, Department of Bioinformatics and Biostatistics, National Experimental Teaching Center for Life Sciences and Biotechnology, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China.
Journal of chemical information and modeling
|April 2, 2025
概括
一个新的PEARL力场准确地模拟了内在无序的蛋白质 (IDP) 并稳定了折叠的蛋白质,推进了疾病机制研究.
科学领域:
- 生物化学和分子生物学
- 计算生物学 计算生物学
- 结构生物学 结构生物学
背景情况:
- 内在失序蛋白 (IDP) 在人类疾病中至关重要.
- 分子动力学 (MD) 模拟对于研究IDP至关重要.
- 当前的力场难以准确地模拟IDP的形状灵活性.
研究的目的:
- 开发一种用于生成精确蛋白质力场参数的新工具.
- 改进内在无序蛋白质 (IDP) 构造组合的建模.
- 提高对境内流离失所者在生物过程和疾病中的作用的理解.
主要方法:
- 构建并训练 DihedralProbNet 来预测蛋白质二面概率分布.
- 开发了用于优化力场参数的DeepReweighting算法.
- 引入了PEARL (通过重权学习进行个性化能量适应) 力量场.
主要成果:
- 与ff19SB.相比,PEARL力场在复制IDP形态组合方面表现出更高的准确性.
- 珍珠成功地稳定了折叠的蛋白质系统的形状.
- 新的力场可以更精确地采样IDP形状.
结论:
- 皮尔力场显著提高了MD模拟的准确性.
- 珍珠有助于更深入地了解在健康和疾病中的IDP功能.
- 这一进步为未来的药物发现和针对IDP相关疾病的治疗策略带来了潜力.
相关概念视频
Intrinsically Disordered Proteins
17.6K
Intrinsically disordered proteins are a group of proteins that do not fold into specific three-dimensional structures. Their structural flexibility allows them to complement ordered proteins to perform functions that are inaccessible to rigid structures. They are more common in eukaryotes than prokaryotes and may either be exclusively intrinsically disordered or hybrid proteins, consisting of a mix of ordered and disordered regions. The absence of a rigid structure in these proteins can be...
17.6K
Protein Folding
7.6K
Proteins are chains of amino acids linked together by peptide bonds. Upon synthesis, a protein folds into a three-dimensional conformation, critical to its biological function. Interactions between its constituent amino acids guide protein folding, and hence the protein structure is primarily dependent on its amino acid sequence.
Protein Structure Is Critical to Its Biological Function
Proteins perform a wide range of biological functions such as catalyzing chemical reactions, providing...
Protein Structure Is Critical to Its Biological Function
Proteins perform a wide range of biological functions such as catalyzing chemical reactions, providing...
7.6K
Conserved Binding Sites
4.1K
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...
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...
4.1K
Conservation of Protein Domains Over Different Proteins
10.6K
Protein domains are small structurally independent units that are part of a single amino acid chain. Although these domains are often structurally independent, they may rely on synergistic effects to perform their functions as part of a larger protein. Protein domains may be conserved within the same organism, as well as across different organisms.
A limited set of protein domains often duplicate and recombine during evolution. These domains can be organized in different combinations to...
A limited set of protein domains often duplicate and recombine during evolution. These domains can be organized in different combinations to...
10.6K


