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Specific radiation damage can be used to solve macromolecular crystal structures
Raimond B G Ravelli1, Hanna-Kirsti Schrøder Leiros, Baocheng Pan
1European Molecular Biology Laboratory (EMBL) Grenoble Outstation, 6 rue Jules Horowitz, B.P. 181, F38042 9, Grenoble Cedex, France. ravelli@embl-grenoble.fr
Structure (London, England : 1993)
|February 11, 2003
Summary
Radiation damage in macromolecular crystallography, often a concern, can actually be exploited to determine protein and oligonucleotide structures. This method offers a new approach to solving the phase problem in structural biology.
Area of Science:
- Structural Biology
- Crystallography
- Biophysics
Background:
- Third-generation synchrotron sources raise concerns about ionizing radiation effects on crystalline biological samples.
- Radiation damage is typically viewed as an obstacle in structural determination.
Purpose of the Study:
- To demonstrate that radiation damage can be leveraged as a tool for phasing macromolecular structures.
- To explore the potential of radiation damage in overcoming the phase problem in structural biology.
Main Methods:
- Utilizing radiation damage effects in crystalline biological samples.
- Applying the method to a protein and an oligonucleotide.
- Automated model building for structure determination.
Main Results:
- Radiation damage was successfully used for phasing macromolecular structures.
- Complete structural models were built automatically for both a protein and an oligonucleotide.
- Demonstrated the practical application of exploiting radiation damage.
Conclusions:
- Radiation damage is not merely a problem but an opportunity for phasing in macromolecular crystallography.
- Exploiting radiation damage can potentially reduce the difficulty of the phase problem.
- This approach offers a novel strategy for determining the structure of biological macromolecules.