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Related Concept Videos

Protein Networks02:26

Protein Networks

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,...
Protein Networks02:26

Protein Networks

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,...
Protein-protein Interfaces02:04

Protein-protein Interfaces

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 polypeptide...
Protein-Protein Interfaces02:04

Protein-Protein Interfaces

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 polypeptide...
Protein Complexes with Interchangeable Parts01:57

Protein Complexes with Interchangeable Parts

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 to...
Protein Complexes with Interchangeable Parts01:57

Protein Complexes with Interchangeable Parts

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 to...

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Related Experiment Video

Updated: May 10, 2026

Genome-wide Protein-protein Interaction Screening by Protein-fragment Complementation Assay (PCA) in Living Cells
08:38

Genome-wide Protein-protein Interaction Screening by Protein-fragment Complementation Assay (PCA) in Living Cells

Published on: March 3, 2015

Strategies for constructing context-specific protein-protein interaction networks.

Shiyan Nie1,2, Xiangren Kong2, Dong Li2

  • 1Hengyang Medical School, University of South China, 28 Changsheng West Road, Zhengxiang District, Hengyang, Hunan, 421001,  China.

Briefings in Bioinformatics
|May 8, 2026
PubMed
Summary
This summary is machine-generated.

This study introduces context-specific protein-protein interaction (PPI) networks to better understand biological processes. By integrating omics data and large cellular models (LCMs), these networks offer deeper insights into disease and drug discovery.

Keywords:
artificial intelligence (AI)context-specific PPI networksdeep learningmass spectrometry (MS)omics dataprotein–protein interaction (PPI)

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Last Updated: May 10, 2026

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08:38

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Published on: March 3, 2015

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JUMPn: A Streamlined Application for Protein Co-Expression Clustering and Network Analysis in Proteomics

Published on: October 19, 2021

Area of Science:

  • Molecular Biology
  • Systems Biology
  • Bioinformatics

Background:

  • Protein-protein interactions (PPIs) are crucial for biological functions but are often dynamic and context-dependent.
  • Traditional network models struggle to capture the true biological significance of PPIs due to their complexity.
  • Understanding context-specific PPIs is essential for accurate biological interpretation.

Purpose of the Study:

  • To introduce and emphasize the importance of context-specific protein-protein interaction (PPI) networks.
  • To systematically compare various experimental and computational approaches for PPI identification.
  • To review advances in context-specific PPI inference and highlight the potential of large cellular models (LCMs).

Main Methods:

  • Systematic comparison of traditional experimental methods, mass spectrometry (MS)-based high-throughput technologies, and structure/biophysics-based approaches.
  • Review of context-specific PPI inference strategies using omics data integration.
  • Exploration of large cellular models (LCMs) for generating context-aware representations.

Main Results:

  • Existing experimental methods for PPIs have limitations, including low capture efficiency for transient interactions and lack of context-specific datasets.
  • Omics data integration and LCMs show emerging potential for constructing context-specific PPI networks.
  • Context-specific PPI networks are crucial for accurate biological system representation.

Conclusions:

  • Comprehensive context-specific PPI networks are vital for a more accurate reflection of biological systems.
  • These networks can enable deeper mechanistic insights and improved disease interpretation.
  • The development of context-specific PPI networks is expected to accelerate the discovery of therapeutic targets.