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Related Concept Videos

Protein-protein Interfaces02:04

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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Proteins are dynamic macromolecules that carry out a wide variety of essential processes; however, the activities of most proteins depend on their interactions with other molecules or ions, known as ligands.
Protein-ligand interactions are quite specific; even though numerous potential ligands surround a cellular protein at any given time, only a particular ligand can bind to that protein. Moreover, a ligand binds only to a dedicated area on the surface of the protein, known as the...
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Protein Networks02:26

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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 Complexes with Interchangeable Parts01:57

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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.
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Multiprotein signaling complexes are formed in a dynamic process involving protein-protein interactions at the cytoplasmic domain of transmembrane receptors or enzymatic and non-enzymatic proteins associated with the receptor. These complexes ensure the activation and propagation of intracellular signals that regulate cell functions.
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Updated: Jul 20, 2025

Author Spotlight: Streamlining Protein Target Prediction and Validation via Molecular Docking and CETSA
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Modelling peptide-protein complexes: docking, simulations and machine learning.

Arup Mondal1,2, Liwei Chang1,2, Alberto Perez1,2

  • 1Department of Chemistry, University of Florida, Gainesville, FL 32611, USA.

QRB Discovery
|August 2, 2023
PubMed
Summary
This summary is machine-generated.

Predicting peptide-protein interactions is challenging due to peptide flexibility. This review covers advances in computational methods like docking, molecular simulations, and machine learning to improve structure and binding affinity predictions for peptide drug discovery.

Keywords:
Dockingforce fieldmachine learningmolecular dynamics simulationpeptide bindingpeptide–protein interactionscoring

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Area of Science:

  • Biochemistry and Structural Biology
  • Computational Chemistry
  • Pharmacology

Background:

  • Peptides are crucial mediators of protein interactions, accounting for up to 40% of them.
  • Their specificity and unique binding capabilities make peptides attractive drug candidates.
  • Predicting peptide-protein complexes is complex due to high peptide flexibility.

Purpose of the Study:

  • To review recent advancements in computational methods for studying peptide-protein interactions.
  • To provide guidance on selecting appropriate modeling tools for peptide-related research.
  • To address challenges in predicting peptide structures, binding affinities, and kinetics.

Main Methods:

  • Review of docking algorithms and software.
  • Analysis of molecular simulation techniques and force fields.
  • Exploration of machine learning applications in peptide modeling.

Main Results:

  • Docking, molecular simulations, and machine learning show promise in overcoming peptide flexibility challenges.
  • Specific docking programs and force fields are discussed for informed tool selection.
  • Progress has been made in predicting peptide structures, binding affinities, and kinetics.

Conclusions:

  • Computational approaches are essential for advancing peptide-based drug discovery.
  • Understanding the nuances of different modeling tools is key for successful peptide research.
  • Further development in these methods will enhance the prediction accuracy of peptide-protein interactions.