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Related Concept Videos

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...
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,...
Peptide Identification Using Tandem Mass Spectrometry01:33

Peptide Identification Using Tandem Mass Spectrometry

Tandem mass spectrometry, also known as MS/MS or MS2, is an analytical technique that employs two mass analyzers. Essentially it is a series of mass spectrometers that helps isolate a particular biomolecule and then helps study its chemical properties.
This technique helps gather information regarding the protein from which the peptide was obtained and to study the peptides’ amino acid sequence. Identifying peptides from a complex mixture is an important component of the growing field of...
Conserved Binding Sites01:49

Conserved Binding Sites

Many proteins’ biological role depends on their interactions with their ligands, small molecules that bind to specific locations on the protein known as ligand-binding sites. Ligand-binding sites are often conserved among homologous proteins as these sites are critical for protein function.
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Peptide Bonds02:43

Peptide Bonds

A peptide bond covalently attaches amino acids through a dehydration reaction. One amino acid's carboxyl group and another amino acid's amino group combine, releasing a water molecule. The resulting bond is the peptide bond. The products that such linkages form are peptides. As more amino acids join this growing chain, the resulting chain is a polypeptide. Each polypeptide has a free amino group at one end. This end has the N-terminal, or the amino-terminal, and the other end has a free...

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Related Experiment Video

Updated: May 12, 2026

Computational Prediction of Amino Acid Preferences of Potentially Multispecific Peptide-Binding Domains Involved in Protein-Protein Interactions
06:50

Computational Prediction of Amino Acid Preferences of Potentially Multispecific Peptide-Binding Domains Involved in Protein-Protein Interactions

Published on: January 26, 2024

Protein-peptide complex prediction through fragment interaction patterns.

Erik Verschueren1, Peter Vanhee, Frederic Rousseau

  • 1EMBL/CRG Systems Biology Research Unit, Centre for Genomic Regulation-CRG, Dr. Aiguader 88, 08003 Barcelona, Spain.

Structure (London, England : 1993)
|April 16, 2013
PubMed
Summary
This summary is machine-generated.

This study introduces a novel computational method for predicting protein-peptide structures. The approach efficiently samples protein surfaces to model complex interactions, advancing structural biology and drug discovery.

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Identifying Protein-protein Interaction Sites Using Peptide Arrays
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Related Experiment Videos

Last Updated: May 12, 2026

Computational Prediction of Amino Acid Preferences of Potentially Multispecific Peptide-Binding Domains Involved in Protein-Protein Interactions
06:50

Computational Prediction of Amino Acid Preferences of Potentially Multispecific Peptide-Binding Domains Involved in Protein-Protein Interactions

Published on: January 26, 2024

Identifying Protein-protein Interaction Sites Using Peptide Arrays
07:44

Identifying Protein-protein Interaction Sites Using Peptide Arrays

Published on: November 18, 2014

A Protocol for Computer-Based Protein Structure and Function Prediction
16:41

A Protocol for Computer-Based Protein Structure and Function Prediction

Published on: November 3, 2011

Area of Science:

  • Structural Biology
  • Computational Biology
  • Biophysics

Background:

  • Determining the vast number of cellular protein-peptide interactions experimentally is challenging.
  • Current computational methods struggle with the conformational space and docking sites of flexible peptides.

Purpose of the Study:

  • To present a novel ab initio method for predicting protein-peptide complex structures.
  • To address the limitations of existing computational approaches for modeling flexible peptides.

Main Methods:

  • Sampling the entire accessible protein surface using reduced conformational space.
  • Utilizing interacting backbone fragment pairs from unrelated protein structures.

Main Results:

  • Successful ab initio prediction of bound structures for various protein-peptide complexes.
  • Demonstrated potential for discovering protein domain interaction sites.
  • Showcased utility in domain-domain docking predictions.

Conclusions:

  • The developed method offers an efficient approach to model protein-peptide interactions.
  • This technique has implications for understanding cellular mechanisms and identifying new therapeutic targets.