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Updated: May 16, 2026
09:35
Microcrystallography of Protein Crystals and In Cellulo Diffraction
Published on: July 21, 2017
Nearest-cell: a fast and easy tool for locating crystal matches in the PDB
V Ramraj1, G Evans, J M Diprose
1The Division of Structural Biology, Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, England. varun@strubi.ox.ac.uk
Acta Crystallographica. Section D, Biological Crystallography
|November 16, 2012
Summary
Nearest-cell quickly identifies if new macromolecular crystal forms match existing Protein Data Bank entries. This tool aids crystallographers by saving time and suggesting molecular replacement models.
Area of Science:
- Structural Biology
- Crystallography
- Bioinformatics
Background:
- X-ray diffraction is crucial for determining macromolecular structures.
- Identifying novel crystal forms requires comparison with existing databases.
- Efficiently searching the Protein Data Bank (PDB) is essential for structural studies.
Purpose of the Study:
- To develop a tool for rapid comparison of new X-ray diffraction data against the Protein Data Bank.
- To assist crystallographers in identifying known crystal forms and related structures early in data collection.
Main Methods:
- The Nearest-cell tool accepts unit cell parameters and optionally space group information.
- It performs a rapid scan of the Protein Data Bank for matching entries.
- The method focuses on identifying near-matches based on crystallographic parameters.
Main Results:
- Nearest-cell provides quick identification of potential matches in the PDB.
- The tool facilitates the recognition of large families of related structures.
- Early identification of structural relationships can streamline research.
Conclusions:
- Nearest-cell offers a valuable resource for crystallographers at X-ray beamlines.
- The tool has the potential to save significant time and effort in structural studies.
- Identifying related structures early can guide molecular replacement strategies.
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