基于图形的机器学习模型用于蛋白质-蛋白质网络中的体重预测
Hajer Akid1, Kirsley Chennen2, Gabriel Frey2
1ICube, University of Strasbourg, 67412, Illkirch Cedex, France. akid.hajer@gmail.com.
BMC bioinformatics
|November 7, 2024
概括
预测缺失的蛋白质-蛋白质相互作用 (PPI) 对于理解生物功能至关重要. 这项研究引入了一种新的加权网络方法,提高了识别这些重要连接的准确性.
科学领域:
- 计算生物学 计算生物学
- 系统生物学 系统生物学
- 生物信息学是一种生物信息学.
背景情况:
- 蛋白与蛋白相互作用 (PPI) 是生物过程的基础.
- 目前的PPI网络是不完整的,需要计算预测方法.
- 现有的方法经常忽视交互可靠性,使用二进制表示.
研究的目的:
- 开发一种新的计算方法,用于在加权蛋白质-蛋白质网络中进行链接预测.
- 为了更准确的预测,将交互信心评分 (权重) 纳入.
- 为了改善缺失蛋白质与蛋白质相互作用的预测.
主要方法:
- 利用了酵母Saccharomyces cerevisiae STRING数据库中的数据.
- 开发了一个新的模型,结合基于相似性的算法和聚合的信任评分权重.
- 将模型应用于加权蛋白质-蛋白质网络以进行链接预测.
主要成果:
- 拟议的模型显著提高了PPI的预测准确性.
- 与传统方法相比,实现了更高的性能.
- 在平均绝对误差,平均相对绝对误差和根平均平方误差方面取得了明显的改进.
结论:
- 新型加权网络方法在预测蛋白质-蛋白质相互作用方面提供了更高的准确性.
- 这种方法有助于建立更完整和可靠的PPI网络.
- 加强PPI预测对于更深入地了解生物机制至关重要.
相关概念视频
Protein Networks
3.9K
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,...
3.9K
Protein-protein Interfaces
12.5K
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...
12.5K
Physiological Pharmacokinetic Models: Assumption with Protein Binding
33
Physiological models with protein binding in pharmacokinetics offer a sophisticated approach to understanding drug disposition. These models consider drug-protein interactions, enabling them to effectively predict drug concentrations in different organs and tissues. This precision aids in accurate drug dosing, providing a significant advantage over conventional models. A key process within these models is equilibration, which ensures that drug concentrations achieve a steady state within the...
33
Conservation of Protein Domains Over Different Proteins
10.8K
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...
10.8K
Protein and Protein Structures
10.3K
10.3K
Protein and Protein Structure
78.6K
Proteins are one of the most abundant organic molecules in living systems and have the most diverse range of functions of all macromolecules. Proteins may be structural, regulatory, contractile, or protective. They may serve in transport, storage, or membranes; or they may be toxins or enzymes. Their structures, like their functions, vary greatly. They are all, however, amino acid polymers arranged in a linear sequence.
A protein's shape is critical to its function. For example, an enzyme...
A protein's shape is critical to its function. For example, an enzyme...
78.6K


