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Published on: April 10, 2019
Enzyme reactions in nanoporous, picoliter volume containers
Piro Siuti1, Scott T Retterer, Chang-Kyoung Choi
1Graduate School of Genome Science and Technology, University of Tennessee-Oak Ridge National Laboratory, Knoxville, Tennessee 37996, United States.
Analytical Chemistry
|December 14, 2011
Summary
Researchers developed nanoporous, picoliter vessels for enzyme reactions. These microfluidic devices enable rapid enzyme kinetics determination without surface immobilization, aiding drug discovery and diagnostics.
Area of Science:
- Biotechnology
- Nanotechnology
- Biochemistry
Background:
- Nanoscale fabrication enables small-volume reaction vessels for enzyme screening.
- Enzyme characterization is crucial for various biological and medical applications.
Purpose of the Study:
- To develop and evaluate nanoporous, picoliter vessels for enzyme reactions.
- To assess the suitability of these vessels for determining enzyme kinetics.
Main Methods:
- Utilized porous, ~19 pL vessels with ~10 nm pores for enzyme containment.
- Employed microfluidic control and fluorescent microscopy to monitor reactions.
- Assessed diffusion of small molecules and proteins to validate vessel integrity.
Main Results:
- Successfully contained glucose oxidase and horseradish peroxidase within the vessels.
- Demonstrated diffusive feeding of substrates through the nanoporous structure.
- Obtained kinetic parameters (K(m) and V(max)) comparable to conventional methods.
Conclusions:
- Picoliter, nanoporous containers facilitate rapid enzyme kinetics determination in microfluidic systems.
- Eliminates the need for enzyme surface tethering, simplifying experimental setup.
- Applications include drug discovery, clinical diagnostics, and high-throughput screening.
