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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...
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,...
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...
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...
Protein Complexes with Interchangeable Parts01:57

Protein Complexes with Interchangeable Parts

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.
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order to...

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ATTRACT and PTools: open source programs for protein-protein docking.

Sebastian Schneider1, Adrien Saladin, Sébastien Fiorucci

  • 1Physik-Department, Technische Universität München, Garching, Germany. Sebastin.Schneider@ph.tum.de

Methods in Molecular Biology (Clifton, N.J.)
|December 21, 2011
PubMed
Summary
This summary is machine-generated.

Predicting protein-protein complex structures is crucial. The PTools library and ATTRACT program enable systematic docking searches and analysis for structural biology and bioinformatics.

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Area of Science:

  • Structural Biology
  • Bioinformatics
  • Computational Biology

Background:

  • Protein-protein complex structure prediction is vital for understanding biological processes.
  • Accurate prediction aids in drug discovery and protein function analysis.
  • Existing methods require efficient and systematic approaches for docking.

Purpose of the Study:

  • To present the application of the PTools library for protein-protein docking.
  • To demonstrate systematic docking searches and result analysis using ATTRACT.
  • To introduce multi-component docking capabilities within PTools.

Main Methods:

  • Utilizing the PTools object-oriented library (Python/C++) for protein structure manipulation.
  • Employing the ATTRACT program for energy minimization-based systematic docking searches.
  • Applying PTools routines for preparing, executing, and analyzing docking results.

Main Results:

  • PTools facilitates systematic docking searches for protein complex prediction.
  • The ATTRACT program effectively performs docking energy minimization.
  • Analysis of docking results is streamlined using PTools functionalities.

Conclusions:

  • PTools provides a comprehensive framework for macromolecular docking.
  • The integration of ATTRACT enhances systematic docking capabilities.
  • The library supports methodological development and multi-component docking.