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相关概念视频

Protein Networks02:26

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,...
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Protein-protein Interfaces02:04

Protein-protein Interfaces

12.4K
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...
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Protein Complexes with Interchangeable Parts01:57

Protein Complexes with Interchangeable Parts

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Protein Complex Assembly02:41

Protein Complex Assembly

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Proteins can form homomeric complexes with another unit of the same protein or heteromeric complexes with different types.  Most protein complexes self-assemble spontaneously via ordered pathways, while some proteins need assembly factors that guide their proper assembly. Despite the crowded intracellular environment, proteins usually interact with their correct partners and form functional complexes.
Many viruses self-assemble into a fully functional unit using the infected host cell to...
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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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相关实验视频

Updated: Jun 2, 2025

Identification of Protein Complexes in Escherichia coli using Sequential Peptide Affinity Purification in Combination with Tandem Mass Spectrometry
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Identification of Protein Complexes in Escherichia coli using Sequential Peptide Affinity Purification in Combination with Tandem Mass Spectrometry

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多源生物知识引导的超图空间时空子网络嵌入用于蛋白质复合体识别.

Shilong Wang1, Hai Cui1, Yanchen Qu1

  • 1Information Science and Technology College, Dalian Maritime University, No.1 Linghai Road, 116026, Dalian, Liaoning, China.

Briefings in bioinformatics
|January 15, 2025
PubMed
概括
此摘要是机器生成的。

我们开发了HGST,这是一种使用高图空间时空子网络来识别蛋白质复合物的新方法. 这种方法整合了多个来源的数据,并模拟了复杂的相互作用,以便在蛋白质-蛋白质相互作用网络中获得更好的生物学意义.

关键词:
生物知识是生物知识.超图嵌入式嵌入式蛋白质复合体是一种蛋白质复合体.时间空间子网络

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相关实验视频

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科学领域:

  • 系统生物学 系统生物学
  • 生物信息学是一种生物信息学.
  • 计算生物学是一种计算生物学.

背景情况:

  • 蛋白质复合体对于细胞功能和疾病机制至关重要.
  • 现有的蛋白质与蛋白质相互作用 (PPI) 网络分析方法受到静态数据和对对关系假设的限制.
  • 生物系统中的动态和高阶相互作用并未完全被当前的模型所捕捉.

研究的目的:

  • 提出HGST,一个多源生物知识引导的超图空间时空子网络嵌入方法.
  • 克服静态PPI网络的局限性,并模拟非对式交互.
  • 为了更有效地识别生物学意义上的蛋白质复合物.

主要方法:

  • 构建空间时空PPI子网络,结合蛋白质动态和多源知识.
  • 将子网络转换为超图,以建模更高层次的交互.
  • 整合氨基酸序列和基因本体学特征,用于多维表示.
  • 在重权子网络上使用核心附着策略识别蛋白质复合体.

主要成果:

  • 在四个真实PPI数据集中,HGST展示了竞争性表现.
  • 该方法成功识别了具有高生物学意义的蛋白质复合体.
  • 生物分析验证了HGST在复杂识别中的有效性.

结论:

  • HGST提供了一种先进的方法来识别蛋白质复合体,利用时空动态和高阶相互作用.
  • 多源生物知识和多维特征的整合提高了已识别的复合体的准确性和生物相关性.
  • 这种方法为了解蛋白质功能和疾病机制提供了有价值的工具.