从深度学习中吸取的教训 多态多域蛋白质的结构预测 - - 卷曲-卷曲NOD类受体的案例研究
Teodor Asvadur Șulea1, Eliza Cristina Martin1, Cosmin Alexandru Bugeac1
1Department of Bioinformatics and Structural Biochemistry, Institute of Biochemistry of the Romanian Academy, Splaiul Independentei 296, 060031 Bucharest, Romania.
International journal of molecular sciences
|January 25, 2025
概括
新的人工智能深度学习模型在预测多域蛋白质3D蛋白质结构方面表现出了非凡的能力. 然而,在模拟灵活区域和实现稀疏配置方面仍然存在挑战,需要仔细考虑准确的蛋白质结构预测.
科学领域:
- 计算生物学 计算生物学
- 结构生物信息学 结构生物信息学
- 蛋白质科学中的人工智能
背景情况:
- 多域和多态蛋白质对准确的3D结构预测提出了重大挑战.
- 深度学习 (AI) 模型正在成为蛋白质结构预测的强大工具.
研究的目的:
- 评估新一代深度学习模型对复杂的多域,多态蛋白质的预测能力.
- 识别人工智能驱动的蛋白质结构建模中的局限性和偏见.
主要方法:
- 使用A. thaliana*的核酸结合氧化域类 (NOD类) 受体的案例研究.
- 在具有成熟和变形区域的蛋白质上测试深度学习预测器.
- 对多值的1D到3D映射和二次结构元素的预测分析.
主要成果:
- 人工智能预测器准确地模拟具有稳定的拓的模块的3D结构.
- 在预测像卷轴卷轴这样的灵活区域时观察到较低的性能.
- 人工智能模型倾向于预测紧的蛋白质配置,需要对较少的模型进行重新训练.
结论:
- 当全球模板可用时,AI预测器对于建模多域多态蛋白质非常有价值,有警告.
- 需要解决模拟灵活区域和实现所需的紧性方面的挑战.
- 在没有全球模板的情况下,使用实验约束的零碎建模可能会产生更现实的结果.
相关概念视频
Protein Folding
Overview
Conservation of Protein Domains Over Different Proteins
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 form...
A limited set of protein domains often duplicate and recombine during evolution. These domains can be organized in different combinations to form...
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...
Multi-pass Transmembrane Proteins and β-barrels
In multi-pass transmembrane proteins, the polypeptide chain crosses the membrane more than once. The transmembrane polypeptide chain either forms an α-helix or β-strand structure. α-Helix containing multi-pass transmembrane proteins are ubiquitous, whereas β-strand containing ones are mainly found in gram-negative bacteria, mitochondria, and chloroplasts.
α-Helix containing multi-pass transmembrane proteins
Multi-pass transmembrane proteins such as G-protein-linked receptors (GPCRs) and...
α-Helix containing multi-pass transmembrane proteins
Multi-pass transmembrane proteins such as G-protein-linked receptors (GPCRs) and...
G Protein-coupled Receptors
G Protein-Coupled Receptors or GPCRs are membrane-bound receptors that transiently associate with heterotrimeric G proteins and induce an appropriate response to sensory stimuli such as light, odors, hormones, cytokines, or neurotransmitters.
GPCRs are also called heptahelical, 7TM, or serpentine receptors, and consist of seven (H1-H7) transmembrane alpha-helices that span the bilayer to form a cylindrical core. The transmembrane helices are connected by three extracellular loops and three...
GPCRs are also called heptahelical, 7TM, or serpentine receptors, and consist of seven (H1-H7) transmembrane alpha-helices that span the bilayer to form a cylindrical core. The transmembrane helices are connected by three extracellular loops and three...
G Protein-coupled Receptors
G Protein-Coupled Receptors or GPCRs are membrane-bound receptors that transiently associate with heterotrimeric G proteins and induce an appropriate response to sensory stimuli such as light, odors, hormones, cytokines, or neurotransmitters.
GPCRs are also called heptahelical, 7TM, or serpentine receptors, and consist of seven (H1-H7) transmembrane alpha-helices that span the bilayer to form a cylindrical core. The transmembrane helices are connected by three extracellular loops and three...
GPCRs are also called heptahelical, 7TM, or serpentine receptors, and consist of seven (H1-H7) transmembrane alpha-helices that span the bilayer to form a cylindrical core. The transmembrane helices are connected by three extracellular loops and three...


