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User-loaded SlipChip for equipment-free multiplexed nanoliter-scale experiments
Liang Li1, Wenbin Du, Rustem Ismagilov
1Department of Chemistry and Institute for Biophysical Dynamics, The University of Chicago, 929 East 57th Street, Chicago, Illinois 60637, USA.
Journal of the American Chemical Society
|December 17, 2009
Summary
A novel SlipChip enables multiplexed nanoliter experiments, optimizing protein crystallization screening with minimal sample. This microfluidic approach successfully identified crystallization conditions and yielded higher-resolution protein structures.
Area of Science:
- Biochemistry
- Microfluidics
- Structural Biology
Background:
- Multiplexed nanoliter-scale experiments require precise fluid handling.
- Screening crystallization conditions traditionally demands significant sample volumes and resources.
Purpose of the Study:
- To develop and validate a user-loaded, equipment-free SlipChip for multiplexed nanoliter-scale experiments.
- To optimize protein crystallization screening and structure determination using microfluidics.
Main Methods:
- A SlipChip design was employed for controlled mixing of samples with reagents at various ratios.
- Protein crystallization screening was performed using approximately 10 microL of glutaryl-CoA dehydrogenase.
- Crystallization conditions were identified and scaled up, with crystals analyzed by X-ray diffraction.
Main Results:
- The SlipChip successfully screened 528 conditions for glutaryl-CoA dehydrogenase crystallization.
- Identified conditions led to successful crystallization and higher-resolution protein structure determination.
- The SlipChip demonstrated reliable fluid handling across diverse physicochemical properties.
Conclusions:
- The user-loaded SlipChip is a versatile platform for nanoliter-scale experiments, particularly protein crystallization.
- This microfluidic approach reduces sample consumption and enhances structural biology studies.
- The technology holds promise for applications in enzyme kinetics, cell-based assays, and chemical reactions.
