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Protein-protein Interfaces

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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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Allosteric proteins have more than one ligand binding site; the binding of a ligand to any of these sites influences the binding of ligands to the other sites. When a protein is allosteric, its binding sites are called coupled or linked.  In the case of enzymes, the site that binds to the substrate is known as the active site and the other site is known as the regulatory site. When a ligand binds to the regulatory site, this leads to conformational changes in the protein that can influence...
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Identification of Kinase-substrate Pairs Using High Throughput Screening
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A web portal for exploring kinase-substrate interactions.

John A P Sekar1, Yan Chak Li1, Avner Schlessinger2

  • 1Department of Genetics and Genomic Sciences, Icahn Genomics Institute, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA.

NPJ Systems Biology and Applications
|October 3, 2024
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Summary
This summary is machine-generated.

KiNet integrates kinase-substrate interaction data from multiple databases into a user-friendly portal. This tool aids in exploring these interactions within cellular signaling pathways for enhanced knowledge discovery.

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Area of Science:

  • Molecular Biology
  • Systems Biology
  • Bioinformatics

Background:

  • Protein kinases and their substrates are crucial regulators of cellular signaling pathways.
  • Existing public databases contain extensive kinase-substrate information but lack integrated systems-level context.
  • Interpreting these interactions within complex cellular systems requires tools that examine multiple protein interactions simultaneously.

Purpose of the Study:

  • To develop KiNet, a web portal for integrating and visualizing kinase-substrate interactions.
  • To provide a user-friendly platform for exploring these interactions in various biological contexts.
  • To facilitate knowledge discovery and systems-level analysis of protein kinase functions.

Main Methods:

  • Integration of kinase-substrate interaction data from multiple public databases.
  • Development of a web portal (KiNet) for data access and visualization.
  • Implementation of interactive exploration features for pathways, domain families, and custom protein sets.

Main Results:

  • KiNet successfully integrates diverse kinase-substrate interaction data.
  • The portal offers interactive visualization of interactions within systems contexts.
  • The aggregated dataset supports protein kinase studies and systems-level analyses.

Conclusions:

  • KiNet serves as a valuable tool for discovering knowledge about kinase-substrate interactions.
  • The integrated dataset and visualization capabilities enhance understanding of cellular signaling pathways.
  • KiNet is expected to advance research in protein kinase studies and systems biology.