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相关概念视频

Protein-protein Interfaces02:04

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...
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Protein-Protein Interfaces02:04

Protein-Protein Interfaces

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Protein Organization01:24

Protein Organization

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Proteins are polymers of amino acid residues. They are versatile and responsible for different cellular functions, including DNA replication, molecular transport, catalysis, and structural support. Proteins have a hierarchical structure comprising at least three levels of organization: primary, secondary, and tertiary structure. Some large proteins have a quaternary structure where individual protein subunits are linked together.
The primary structure of a protein is its amino acid sequence....
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Protein Networks02:26

Protein Networks

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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,...
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Conserved Binding Sites01:49

Conserved Binding Sites

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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...
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Protein Complexes with Interchangeable Parts01:57

Protein Complexes with Interchangeable Parts

2.6K
Groups of proteins may form a complex where each protein in this complex has a different role in the overall execution of the complex’s function. Often some of the proteins in the complex can be replaced by a closely related variant to give a complex that contains many of the same components yet is functionally distinct.
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order...
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相关实验视频

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Author Spotlight: A Computational Approach to Decipher Amino Acid Preferences in Multispecific Protein-Protein Interactions
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DIPS-Plus:用于界面预测的相互作用蛋白质结构的增强数据库.

Alex Morehead1, Chen Chen2, Ada Sedova3

  • 1University of Missouri, Electrical Engineering & Computer Science, Columbia, MO, 65211, USA. acmwhb@umsystem.edu.

Scientific data
|August 3, 2023
PubMed
概括

我们介绍了DIPS-Plus,这是一个用于蛋白界面预测 (PIP) 的增强数据集. 这种功能丰富的资源改善了机器学习模型,在识别蛋白质相互作用方面取得了新的最先进的结果.

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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
  • 机器学习在生物学中的应用

背景情况:

  • 蛋白界面预测 (PIP) 对于理解蛋白质的功能和相互作用至关重要.
  • 现有的数据集,如相互作用蛋白结构数据库 (DIPS) 提供结构信息,但缺乏丰富的功能.
  • 开发用于PIP的先进机器学习模型需要全面和功能丰富的数据集.

研究的目的:

  • 介绍DIPS-Plus,一个扩展和功能丰富的数据集用于蛋白质接口预测.
  • 为研究人员提供一个精心策划的功能库,用于训练机器学习模型.
  • 为了证明DIPS-Plus在改善最先进的PIP方法中的有效性.

主要方法:

  • 扩展DIPS数据集以创建DIPS-Plus,包括42,112个蛋白质复合体.
  • 包括多种残留水平特征:表面接近,半球氨基酸组成,以及基于隐形马尔科夫模型 (HMM) 的配置序列特征.
  • 在DIPS-Plus上训练的最先进的PIP模型与现有方法进行基准测试.

主要成果:

  • 与最初的DIPS数据集相比,DIPS-Plus提供了一个显著更丰富的功能集.
  • 在DIPS-Plus上训练一款最先进的模型,在蛋白质接口预测方面实现了新的最先进的性能.
  • 改进后的模型超越了以前在不那么全面的特征编码上训练的领先模型.

结论:

  • DIPS-Plus是一个有价值的,功能丰富的资源,用于推进基于机器学习的蛋白质接口预测.
  • 数据集有助于开发更准确,更强大的PIP方法.
  • 这项工作突显了精心策划,丰富的特征数据集在实现生物信息学SOTA结果的重要性.