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相关概念视频

Protein Complexes with Interchangeable Parts01:57

Protein Complexes with Interchangeable Parts

2.9K
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...
2.9K
Protein Complexes with Interchangeable Parts01:57

Protein Complexes with Interchangeable Parts

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2.1K
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 Complex Assembly02:41

Protein Complex Assembly

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Assembly of Signaling Complexes01:30

Assembly of Signaling Complexes

6.5K
Multiprotein signaling complexes are formed in a dynamic process involving protein-protein interactions at the cytoplasmic domain of transmembrane receptors or enzymatic and non-enzymatic proteins associated with the receptor. These complexes ensure the activation and propagation of intracellular signals that regulate cell functions.
Interaction domains in cell signaling
Interaction domains recognize exposed features of their binding partners containing post-translationally modified sequences,...
6.5K
Cytoskeletal Accessory Proteins01:13

Cytoskeletal Accessory Proteins

3.9K
The cytoskeleton is an essential cell component that plays several structural and functional roles. However, the filaments that make up the cytoskeleton cannot function independently and depend on the accessory or ancillary proteins to effectively carry out their function. Accessory proteins associate with cytoskeletal filaments and their monomers, aiding filament formation and function. They also help in the cross-communication among cytoskeletal filaments. Cytoskeletal accessory proteins are...
3.9K

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相关实验视频

Updated: Jan 16, 2026

Detecting and Characterizing Protein Self-Assembly In Vivo by Flow Cytometry
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Detecting and Characterizing Protein Self-Assembly In Vivo by Flow Cytometry

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复杂的组装和活动状态作为多方面的蛋白质属性,解释表型变异性.

George Rosenberger1,2, Peng Xue3,4, Isabell Bludau3,5

  • 1Department of Systems Biology, Columbia University Irving Medical Center, New York, NY, USA.

bioRxiv : the preprint server for biology
|October 3, 2025
PubMed
概括

这项研究引入了一种多omics框架来分析蛋白质活性和网络,揭示了对细胞功能和表型的更深入的见解,而不仅仅是蛋白质丰富度. 它强调了蛋白相互作用在将分子数据连接到可观测结果中的关键作用.

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Pulldown Assay Coupled with Co-Expression in Bacteria Cells as a Time-Efficient Tool for Testing Challenging Protein-Protein Interactions
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The MultiBac Protein Complex Production Platform at the EMBL
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The MultiBac Protein Complex Production Platform at the EMBL

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相关实验视频

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科学领域:

  • 分子生物学分子生物学
  • 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:

  • 细胞功能研究往往忽略了蛋白质的修饰和相互作用,而是专注于分子丰度.
  • 之前的工作建立了特定环境网络的方法 (转录因子-基因调节,激酶-基质,蛋白质相互作用).
  • 这些生物网络之间的复杂的相互依存关系在很大程度上仍未被探索.

研究的目的:

  • 开发一个多主题框架,将蛋白质活动整合到特定环境的网络中.
  • 为了更深入地了解分子表型的功能性洞察力,超越蛋白质丰富度.
  • 探索蛋白质复合体和相互作用在细胞过程中的作用.

主要方法:

  • 开发了一个多omics框架来利用测量或推断的蛋白质活性.
  • 将框架应用于特定环境的网络.
  • 使用逐渐分化的HeLa细胞系 (CCL2和京都) 进行分析.

主要成果:

  • 与单独分析蛋白质丰度相比,该框架提供了更深入的功能洞察力.
  • 证明了蛋白质相互作用网络在将分子形状与表型结果联系起来的关键作用.
  • 研究了蛋白质复合体和相互作用对细胞翻倍时间和*Salmonella* Typhimurium感染易感性的影响.

结论:

  • 蛋白相互作用网络对于将分子数据与细胞表型连接至关重要.
  • 开发的多学科框架为分析复杂的生物数据集提供了可概括的方法.
  • 这种方法提高了我们对细胞功能和疾病机制的理解.