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相关概念视频

Protein-protein Interfaces02:04

Protein-protein Interfaces

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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 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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Genome-wide Protein-protein Interaction Screening by Protein-fragment Complementation Assay PCA in Living Cells
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加快蛋白质-蛋白质相互作用幕,减少AlphaFold-Multimer采样.

Greta Bellinzona1, Davide Sassera1,2, Alexandre M J J Bonvin3

  • 1Department of Biology and Biotechnology, University of Pavia, Pavia 27100, Italy.

Bioinformatics advances
|October 28, 2024
PubMed
概括

减少AlphaFold-Multimer模型可以加快蛋白质-蛋白质相互作用 (PPI) 预测的速度,而不会失去准确性. 这为大规模的PPI发现提供了一种高效和环保的方法.

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科学领域:

  • 计算结构生物学计算结构生物学
  • 生物信息学是一种生物信息学.
  • 系统生物学 系统生物学

背景情况:

  • 蛋白与蛋白相互作用 (PPI) 对于理解细胞功能和生物系统至关重要.
  • 像AlphaFold-Multimer这样的计算工具的进步有助于预测PPI.
  • 扩展PPI预测以进行全蛋白质组分析,会带来计算方面的挑战.

研究的目的:

  • 评估减少AlphaFold-Multimer模型对PPI预测准确性的影响.
  • 为大规模PPI发现开发一种更快,更节约资源的方法.

主要方法:

  • 用单个模型输出的AlphaFold-Multimer与标准的五个模型输出的评估.
  • 对来自细菌和真核生物来源的物种内部和物种间PPI的多样化数据集进行测试.

主要成果:

  • 将生成模型的数量从五个减少到一个并没有影响区分真假PPI的准确性.
  • 精简的方法保持了高精度的细菌和真核生物蛋白相互作用.

结论:

  • 来自AlphaFold-Multimer的单个模型输出足以准确预测PPI.
  • 这种优化为大规模的PPI发现提供了更快,更有效,更环保的解决方案.