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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 Import into the Peroxisomes01:27

Protein Import into the Peroxisomes

Cells contain membrane-bound organelles called peroxisomes that oxidize organic molecules by transferring hydrogen atoms to oxygen, producing hydrogen peroxide. Peroxisomes enzymatically convert the released hydrogen peroxide into water and oxygen.
Peroxisomal Protein Import:
Peroxisomes lack the genetic machinery required to code for their own proteins. Hence, most peroxisomal membrane, lumenal and transmembrane proteins are synthesized in the cytoplasm or ER and transported to the peroxisome...
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...
Peroxisomes01:24

Peroxisomes

Peroxisomes are specialized organelles present in fungi, plant, and animal cells. It can vary in number, size, morphology, and activity depending on the type of tissue and the nutritional state of the cell. For example, cells with active lipid metabolism, such as adipocytes, neurons, and hepatocytes, have more peroxisomes than other cells in the body. Besides their primary role in breaking down complex organic molecules, peroxisomes can also synthesize specific macromolecules and participate in...
Proteomics01:33

Proteomics

A proteome is the entire set of proteins that a cell type produces. We can study proteomes using the knowledge of genomes because genes code for mRNAs, and the mRNAs encode proteins. Although mRNA analysis is a step in the right direction, not all mRNAs are translated into proteins.
Proteomics is the study of proteomes' function. It involves the large-scale systematic study of the proteome to denote the protein complement expressed by a genome. Scientist Mark Wilkins coined the term proteomics...

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Updated: Jul 3, 2026

Mapping Dysfunctional Protein-Protein Interactions in Disease
09:39

Mapping Dysfunctional Protein-Protein Interactions in Disease

Published on: October 24, 2025

Peroxisomal interactome mapping enables network-based modelling of function and disease.

Søren W Gersting1,2, Julia V Cramer1,3, Philipp Guder4,5

  • 1University Children's Research, UCR@Kinder-UKE, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.

Life Science Alliance
|July 1, 2026
PubMed
Summary
This summary is machine-generated.

Researchers mapped the peroxisomal interactome, identifying novel protein interactions crucial for understanding peroxisomal dysfunction and developing new therapies for related diseases.

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Peroxisome Staining in Mammalian Cells Using Peroxisome-Specific Probes
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Peroxisome Staining in Mammalian Cells Using Peroxisome-Specific Probes

Published on: December 19, 2025

Area of Science:

  • Cell Biology
  • Computational Biology
  • Genetics

Background:

  • Peroxisomal dysfunction causes multisystem disorders with limited mechanistic insight and therapeutic options.
  • Existing computational strategies for disease research are hindered by incomplete human interactome data, particularly for peroxisomal proteins.

Purpose of the Study:

  • To create the first comprehensive map of the peroxisomal interactome.
  • To identify novel protein-protein interactions (PPIs) and potential therapeutic targets for peroxisomal diseases.

Main Methods:

  • Utilized an automated, informatics-guided bioluminescence resonance energy transfer (BRET) strategy to profile PPIs for 92 peroxisomal proteins and six isoforms.
  • Integrated newly identified PPIs with curated datasets to expand the peroxisomal interactome.
  • Applied network analysis and gene ontology to tissue-specific interactome variants.

Main Results:

  • Successfully mapped 333 novel PPIs among peroxisomal proteins, validating 68% of known interactions.
  • The expanded interactome is enriched for drug targets and proteins associated with disease.
  • Identified tissue-specific functional submodules and pathways contributing to disease vulnerability.

Conclusions:

  • The developed peroxisomal interactome map provides a systems-level framework for understanding peroxisomal diseases.
  • This resource facilitates the identification of novel therapeutic targets and drug repurposing candidates.
  • The methodology can be extended to study other organelle systems.