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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,...
Mutation, Gene Flow, and Genetic Drift01:09

Mutation, Gene Flow, and Genetic Drift

In a population that is not at Hardy-Weinberg equilibrium, the frequency of alleles changes over time. Therefore, any deviations from the five conditions of Hardy-Weinberg equilibrium can alter the genetic variation of a given population. Conditions that change the genetic variability of a population include mutations, natural selection, non-random mating, gene flow, and genetic drift (small population size).
Gene Duplication and Divergence02:37

Gene Duplication and Divergence

The seminal work of Ohno in 1970 popularized the idea of gene duplication and divergence. DNA sequence comparison studies reveal that a large portion of the genes in bacteria, archaebacteria, and eukaryotes was  generated by gene duplication and divergence, indicating its critical role in evolution.
The duplicated copies of the gene are called Paralogs. Paralogs with similar sequences and functions form a gene family. Across several species, a large number of gene families are characterized.
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...

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Related Experiment Video

Updated: May 14, 2026

Inherent Dynamics Visualizer, an Interactive Application for Evaluating and Visualizing Outputs from a Gene Regulatory Network Inference Pipeline
10:44

Inherent Dynamics Visualizer, an Interactive Application for Evaluating and Visualizing Outputs from a Gene Regulatory Network Inference Pipeline

Published on: December 7, 2021

Detecting recurrent gene mutation in interaction network context using multi-scale graph diffusion.

Sepideh Babaei1, Marc Hulsman, Marcel Reinders

  • 1Delft Bioinformatics Lab, Delft University of Technology, Delft, The Netherlands.

BMC Bioinformatics
|January 25, 2013
PubMed
Summary
This summary is machine-generated.

Identifying cancer gene pathways is crucial. This study uses a multi-scale diffusion kernel on mutation data to find cancer genes within their interaction network context, revealing novel cancer drivers.

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Last Updated: May 14, 2026

Inherent Dynamics Visualizer, an Interactive Application for Evaluating and Visualizing Outputs from a Gene Regulatory Network Inference Pipeline
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Published on: December 7, 2021

JUMPn: A Streamlined Application for Protein Co-Expression Clustering and Network Analysis in Proteomics
07:28

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

Published on: October 19, 2021

Area of Science:

  • Genomics
  • Bioinformatics
  • Cancer Research

Background:

  • Identifying molecular drivers of cancer, including cancer genes and deregulated pathways, remains a significant challenge.
  • Exploiting protein-protein interaction networks offers a promising avenue for understanding gene function and identifying cancer-related pathways.
  • Murine retroviral insertional mutagenesis data provides a valuable resource for studying gene dysregulation in cancer development.

Purpose of the Study:

  • To identify pathways of frequently mutated genes by analyzing their network neighborhood.
  • To introduce and apply a multi-scale diffusion kernel for detecting cancer genes within their interaction network context.
  • To uncover novel cancer genes and pathways by integrating mutation data with network information.

Main Methods:

  • Development and application of a multi-scale diffusion kernel.
  • Analysis of a large dataset of murine retroviral insertional mutagenesis data.
  • Exploitation of protein-protein interaction networks to define gene neighborhoods.

Main Results:

  • Identification of densely connected components of known and putatively novel cancer genes enriched for cancer-related pathways across multiple diffusion scales.
  • Observation of significant mutual exclusion patterns in mutations within identified gene clusters, suggesting functional linkage.
  • Detection of infrequently mutated genes harboring significant mutations within their interaction network neighborhoods, including well-established cancer genes.

Conclusions:

  • Recurrent mutations are best defined by considering the interaction network context.
  • The study highlights the importance of multi-scale analysis for detecting significant cancer genes and networks.
  • The identified putative cancer genes and networks are significant across various diffusion scales, underscoring the necessity of a multi-scale approach.