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Updated: Jul 5, 2026
10:01
Structure-Guided Design and Development of Novel Cyclophilin A Inhibitors and Ganoderiol-F Derivatives: An In-Silico Approach
Published on: June 23, 2026
Using MSDchem to search the PDB ligand dictionary.
Dimitris Dimitropoulos1, John Ionides1, Kim Henrick1
1European Bioinformatics Institute, Hinxton, Cambridgeshire, United Kingdom.
Current Protocols in Bioinformatics
|April 23, 2008
Summary
The Protein Data Bank (PDB) ligand dictionary provides chemical properties for small molecules. This vital resource ensures consistency across PDB entries and is maintained globally by the Worldwide Protein Data Bank (wwPDB).
Area of Science:
- Biochemistry
- Structural Biology
- Bioinformatics
Background:
- The Protein Data Bank (PDB) stores 3D structural data of biological macromolecules.
- PDB entries contain small molecules (ligands) crucial for biological function, but lack detailed chemical property information.
- A standardized chemical reference is needed to interpret the role of these small molecules.
Purpose of the Study:
- To describe the PDB ligand dictionary as a chemical reference resource.
- To highlight its role in providing consistent chemical information for small molecules within PDB entries.
- To introduce the MSDchem ligand database as an extension of the PDB ligand dictionary.
Main Methods:
- The PDB ligand dictionary is maintained and exchanged by Worldwide Protein Data Bank (wwPDB) sites globally.
- The European BioInformatics Institute (EBI) extends the dictionary into the MSDchem database.
- MSDchem utilizes chemo-informatics and additional curation for enhanced data.
Main Results:
- The PDB ligand dictionary serves as a consistent chemical reference for small molecules across all PDB entries.
- The MSDchem database expands the PDB ligand dictionary with advanced chemo-informatics and curation.
- MSDchem is publicly accessible via a web-based search system.
Conclusions:
- The PDB ligand dictionary is essential for understanding the chemical properties of small molecules in structural biology.
- The MSDchem database enhances this resource, providing greater utility for researchers.
- Global collaboration ensures the maintenance and accessibility of these critical chemical reference databases.
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