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Controlled dehydration improves the diffraction quality of two RNA crystals.
HaJeung Park1, Tuan Tran2, Jun Hyuck Lee3,4
1X-ray Core Facility, The Scripps Research Institute, Scripps Florida, 130 Scripps Way, Jupiter, FL, 33458, USA. hajpark@scripps.edu.
BMC Structural Biology
|November 5, 2016
Summary
Dehydration techniques using a Free Mounting System (FMS) successfully improved the poor diffraction quality of RNA crystals. This method offers a general approach to enhance RNA crystal diffraction for structure determination.
Area of Science:
- Structural Biology
- Biochemistry
- Molecular Biology
Background:
- Post-crystallization dehydration is common for improving protein crystal diffraction.
- RNA crystals often exhibit poor diffraction quality.
- Limited research exists on applying dehydration to enhance RNA crystal diffraction.
Purpose of the Study:
- To investigate dehydration techniques for improving RNA crystal diffraction.
- To apply these methods to RNA constructs relevant to repeat expansion disorders.
Main Methods:
- Utilized dehydration techniques with a Free Mounting System (FMS), a humidity control device.
- Applied these methods to RNA crystals modeling repeat expansion disorders.
Main Results:
- Successfully recovered poor diffraction quality in RNA crystals using FMS dehydration.
- Demonstrated the applicability of the method to disease-relevant RNA constructs.
Conclusions:
- The described dehydration method can generally improve RNA crystal diffraction quality.
- Facilitates the structure determination of RNA molecules.
