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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-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...
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.
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally analyses the...
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.
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally analyses the...
Ligand Binding Sites02:40

Ligand Binding Sites

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...
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,...

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

Published on: January 26, 2024

HotPoint: hot spot prediction server for protein interfaces.

Nurcan Tuncbag1, Ozlem Keskin, Attila Gursoy

  • 1Center for Computational Biology and Bioinformatics, and College of Engineering, Koc University, Rumelifeneri Yolu, 34450 Sariyer Istanbul, Turkey.

Nucleic Acids Research
|May 7, 2010
PubMed
Summary

Researchers have developed HotPoint, a web server that accurately predicts protein-protein interaction hot spots. This tool aids in understanding binding sites and designing targeted therapies by identifying key residues contributing to binding energy.

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A Protocol for Computer-Based Protein Structure and Function Prediction

Published on: November 3, 2011

Area of Science:

  • Biochemistry
  • Structural Biology
  • Computational Biology

Background:

  • Protein-protein interactions are crucial for cellular functions.
  • The energy distribution at protein interfaces is heterogeneous, with specific residues, termed 'hot spots', significantly contributing to binding free energy.

Purpose of the Study:

  • To introduce HotPoint, a novel web server for predicting hot spots in protein-protein interfaces.
  • To provide researchers with an efficient and accurate tool for analyzing protein binding sites.

Main Methods:

  • Development of an empirical prediction model based on residue solvent occlusion and knowledge-based pair potentials.
  • Implementation of the model into a user-friendly web server accepting protein complexes and chain identifiers as input.

Main Results:

  • The HotPoint server achieves a prediction accuracy of 70% for hot spots.
  • The server provides detailed hot spot predictions, residue properties, and interactive 3D visualizations.
  • Results are downloadable for further analysis.

Conclusions:

  • HotPoint offers a computationally efficient and accurate method for identifying protein-protein interaction hot spots.
  • The web server facilitates binding site characterization and aids in the rational design of small molecules targeting protein interactions.