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Related Concept Videos

Molecular Models02:00

Molecular Models

Physical models representing molecular architectures of chemical compounds play essential roles in understanding chemistry. The use of molecular models makes it easier to visualize the structures and shapes of atoms and molecules.
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...
Ligand Binding Sites02:40

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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...
Ligand Binding and Linkage00:49

Ligand Binding and Linkage

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 the...
Ligand Binding and Linkage00:49

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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 the...
The Equilibrium Binding Constant and Binding Strength02:18

The Equilibrium Binding Constant and Binding Strength

The equilibrium binding constant (Kb) quantifies the strength of a protein-ligand interaction. Kb can be calculated as follows when the reaction is at equilibrium:

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Related Experiment Video

Updated: Jun 23, 2026

Incorporating Target Protein Structure Flexibility and Dynamics in Computational Drug Discovery Using Ensemble-Based Docking Analysis
08:49

Incorporating Target Protein Structure Flexibility and Dynamics in Computational Drug Discovery Using Ensemble-Based Docking Analysis

Published on: June 20, 2025

PTools: an opensource molecular docking library.

Adrien Saladin1, Sébastien Fiorucci, Pierre Poulain

  • 1Computational Biology, School of Engineering and Science, Jacobs University Bremen, 28759 Bremen, Germany. adrien.saladin@ibpc.fr

BMC Structural Biology
|May 5, 2009
PubMed
Summary
This summary is machine-generated.

A new Python/C++ library, PTools, simplifies macromolecular docking method development. It offers routines for PDB manipulation, docking, and analysis, accelerating software creation for researchers.

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Area of Science:

  • Bioinformatics
  • Computational Biology
  • Structural Biology

Background:

  • Macromolecular docking is a complex bioinformatics challenge.
  • Developing new docking algorithms is time-consuming due to repetitive tasks.
  • A robust library is needed to streamline the creation of docking software.

Purpose of the Study:

  • To introduce an object-oriented Python/C++ library to facilitate the development of novel macromolecular docking methods.
  • To provide both low-level routines (e.g., PDB manipulation) and high-level tools for docking and analysis.
  • To demonstrate the library's usability through a practical example of a 3-body docking procedure.

Main Methods:

  • Development of an object-oriented library integrating Python and C++.
  • Inclusion of functions for handling Protein Data Bank (PDB) files.
  • Implementation of tools for molecular docking and results analysis.
  • Demonstration using a 3-body docking procedure.

Main Results:

  • The PTools library supports coarse-grained and atomic molecular resolutions.
  • It enables rapid development of new docking software.
  • The library has been successfully applied in protein-protein and protein-DNA docking with the ATTRACT program.
  • It is also used for simulation analysis.

Conclusions:

  • PTools significantly accelerates the development of new docking software.
  • The library is versatile, handling various molecular resolutions and applications.
  • PTools is freely available under the GNU GPL license with comprehensive documentation.