一种基于t-SNE算法的新数据库方法,用于使用基于分子网络的peptaibols的增强递减
Ilias El Ouar1,2, Alexandra Berlioz-Barbier1, Vincent Lecocq1
1IFP Energies nouvelles, Rond-point de l'echangeur de Solaize, BP 3, 69360 Solaize, France.
Journal of proteome research
|December 12, 2025
概括
本研究引入了一种使用理论碎片化和机器学习的新型计算方法,以改善天然产品类别的peptaibols的识别和分类. 这种方法增强了在质谱工作流程中复杂混合物的分析.
科学领域:
- 自然产品化学 自然产品化学
- 计算化学计算化学
- 质谱测量质量谱测量
背景情况:
- 펩타이볼是富含非蛋白质原性氨基酸的,由Trichoderma物种产生的.
- 它们的结构多样性和有限的光谱数据挑战使用LC-HRMS/MS识别.
- 对于发现生物活性分子而言,类醇的减复是至关重要的.
研究的目的:
- 开发一种新的策略,以改善peptaibol的复制和分类.
- 将理论MS/MS碎片化预测与实验数据相结合.
- 在高通量工作流程中增强复杂混合物的分析.
主要方法:
- 使用预测的b型和y型离子生成一个自定义的光谱数据库.
- 用实验数据校准的强度建模.
- 使用t分布式随机邻居嵌入 (t-SNE) 进行尺寸缩小.
主要成果:
- 这种新的方法在多种不同的peptaibols中表现出强度,改善了序列分配.
- 由t-SNE指导的定制光谱数据库促进了基于片段的匹配.
- 这种方法使得未知类化合物的快速可靠分类成为可能.
结论:
- 本研究介绍了第一个以t-SNE为指导的自然产品脱复制的理论光谱数据库.
- 该方法为优先考虑生物活性类家族提供了一个强大的工具.
- 进一步丰富数据库将扩大对更广泛的类家族的特异性和适用性.
相关概念视频
Peptide Identification Using Tandem Mass Spectrometry
8.1K
Tandem mass spectrometry, also known as MS/MS or MS2, is an analytical technique that employs two mass analyzers. Essentially it is a series of mass spectrometers that helps isolate a particular biomolecule and then helps study its chemical properties.
This technique helps gather information regarding the protein from which the peptide was obtained and to study the peptides’ amino acid sequence. Identifying peptides from a complex mixture is an important component of the growing field of...
This technique helps gather information regarding the protein from which the peptide was obtained and to study the peptides’ amino acid sequence. Identifying peptides from a complex mixture is an important component of the growing field of...
8.1K
Protein Networks
4.5K
An organism can have thousands of different proteins, and these proteins must cooperate to ensure the health of an organism. Proteins bind to other proteins and form complexes to carry out their functions. Many proteins interact with multiple other proteins creating a complex network of protein interactions.
These interactions can be represented through maps depicting protein-protein interaction networks, represented as nodes and edges. Nodes are circles that are representative of a protein,...
These interactions can be represented through maps depicting protein-protein interaction networks, represented as nodes and edges. Nodes are circles that are representative of a protein,...
4.5K
Protein-protein Interfaces
14.4K
Many proteins form complexes to carry out their functions, making protein-protein interactions (PPIs) essential for an organism's survival. Most PPIs are stabilized by numerous weak noncovalent chemical forces. The physical shape of the interfaces determines the way two proteins interact. Many globular proteins have closely-matching shapes on their surfaces, which form a large number of weak bonds. Additionally, many PPIs occur between two helices or between a surface cleft and a...
14.4K


