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Related Concept Videos

Protein Networks02:26

Protein Networks

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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.
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Protein-protein Interfaces02:04

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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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Proteins can undergo many types of post-translational modifications, often in response to changes in their environment. These modifications play an important role in the function and stability of these proteins. Covalently linked molecules include functional groups, such as methyl, acetyl, and phosphate groups, and also small proteins, such as ubiquitin. There are around 200 different types of covalent regulators that have been identified.
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Proteomics01:33

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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.
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Related Experiment Video

Updated: May 1, 2026

Global Identification of Co-Translational Interaction Networks by Selective Ribosome Profiling
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Global Identification of Co-Translational Interaction Networks by Selective Ribosome Profiling

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Studying post-translational modifications with protein interaction networks.

Jonathan Woodsmith1, Ulrich Stelzl1

  • 1Max Planck Institute for Molecular Genetics (MPIMG), Otto-Warburg Laboratory, Ihnestraße 63-73, D-14195 Berlin, Germany.

Current Opinion in Structural Biology
|April 12, 2014
PubMed
Summary
This summary is machine-generated.

Human protein-protein interactions (PPIs) and post-translational modifications (PTMs) are crucial for cellular functions. Integrating PPI and PTM data reveals how these modifications dynamically rewire molecular networks.

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Area of Science:

  • Molecular Biology
  • Systems Biology
  • Biochemistry

Background:

  • Over 46 studies have mapped approximately 75,000 human protein-protein interactions (PPIs), contributing to our understanding of cellular systems.
  • Recent research highlights the role of post-translational modification (PTM) enzyme families in diverse cellular functions.
  • Existing datasets offer insights into protein complex dynamics and enzymatic cascades.

Purpose of the Study:

  • To integrate protein-protein interaction (PPI) and post-translational modification (PTM) data.
  • To understand the dynamic rewiring of molecular networks mediated by PTMs.
  • To functionally prioritize changing PTMs in human cells using interaction networks.

Main Methods:

  • Analysis of large-scale human interactome datasets.
  • Integration of protein-protein interaction (PPI) data with post-translational modification (PTM) information.
  • Network analysis to identify PTM-mediated rewiring events.

Main Results:

  • The study integrates extensive PPI data with PTM dynamics.
  • It reveals how PTMs conditionally rewire molecular networks through specific recognition events.
  • This integration approach helps prioritize the functional significance of numerous mapped PTMs.

Conclusions:

  • Combined analysis of PPI and PTM dynamics is essential for understanding cellular regulation.
  • Interaction networks are valuable tools for prioritizing the functional impact of PTMs.
  • This approach advances the study of dynamic molecular networks in human cells.