| BURYŠKA, Tomáš, Michal VAŠINA, Fabrice GIELEN, Pavel VAŇÁČEK, Liisa VAN VLIET, Jan JEZEK, Zdenek PILAT, Pavel ZEMÁNEK, Jiří DAMBORSKÝ, Florian HOLLFELDER and Zbyněk PROKOP. Controlled Oil/Water Partitioning of Hydrophobic Substrates Extending the Bioanalytical Applications of Droplet-Based Microfluidics. Analytical Chemistry. Washington, D.C.: AMER CHEMICAL SOC, 2019, vol. 91, No 15, p. 10008-10015. ISSN 0003-2700. Available from: https://dx.doi.org/10.1021/acs.analchem.9b01839. |
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@article{1555283,
author = {Buryška, Tomáš and Vašina, Michal and Gielen, Fabrice and Vaňáček, Pavel and van Vliet, Liisa and Jezek, Jan and Pilat, Zdenek and Zemánek, Pavel and Damborský, Jiří and Hollfelder, Florian and Prokop, Zbyněk},
article_location = {Washington, D.C.},
article_number = {15},
doi = {http://dx.doi.org/10.1021/acs.analchem.9b01839},
keywords = {ENZYME-KINETICS; PLATFORM; CHIP; COMPARTMENTS; SENSITIVITY; ABSORBENCY; EVOLUTION; TRANSPORT; ASSAYS; SPACE},
language = {eng},
issn = {0003-2700},
journal = {Analytical Chemistry},
title = {Controlled Oil/Water Partitioning of Hydrophobic Substrates Extending the Bioanalytical Applications of Droplet-Based Microfluidics},
url = {https://pubs.acs.org/doi/abs/10.1021/acs.analchem.9b01839},
volume = {91},
year = {2019}
}
TY - JOUR
ID - 1555283
AU - Buryška, Tomáš - Vašina, Michal - Gielen, Fabrice - Vaňáček, Pavel - van Vliet, Liisa - Jezek, Jan - Pilat, Zdenek - Zemánek, Pavel - Damborský, Jiří - Hollfelder, Florian - Prokop, Zbyněk
PY - 2019
TI - Controlled Oil/Water Partitioning of Hydrophobic Substrates Extending the Bioanalytical Applications of Droplet-Based Microfluidics
JF - Analytical Chemistry
VL - 91
IS - 15
SP - 10008-10015
EP - 10008-10015
PB - AMER CHEMICAL SOC
SN - 00032700
KW - ENZYME-KINETICS
KW - PLATFORM
KW - CHIP
KW - COMPARTMENTS
KW - SENSITIVITY
KW - ABSORBENCY
KW - EVOLUTION
KW - TRANSPORT
KW - ASSAYS
KW - SPACE
UR - https://pubs.acs.org/doi/abs/10.1021/acs.analchem.9b01839
L2 - https://pubs.acs.org/doi/abs/10.1021/acs.analchem.9b01839
N2 - Functional annotation of novel proteins lags behind the number of sequences discovered by the next-generation sequencing. The throughput of conventional testing methods is far too low compared to sequencing; thus, experimental alternatives are needed. Microfluidics offer high throughput and reduced sample consumption as a tool to keep up with a sequence-based exploration of protein diversity. The most promising droplet-based systems have a significant limitation: leakage of hydrophobic compounds from water compartments to the carrier prevents their use with hydrophilic reagents. Here, we present a novel approach of substrate delivery into microfluidic droplets and apply it to high-throughput functional characterization of enzymes that convert hydrophobic substrates. Substrate delivery is based on the partitioning of hydrophobic chemicals between the oil and water phases. We applied a controlled distribution of 27 hydrophobic haloalkanes from oil to reaction water droplets to perform substrate specificity screening of eight model enzymes from the haloalkane dehalogenase family. This droplet-on-demand microfluidic system reduces the reaction volume 65 000-times and increases the analysis speed almost 100-fold compared to the classical test tube assay. Additionally, the microfluidic setup enables a convenient analysis of dependences of activity on the temperature in a range of 5 to 90 degrees C for a set of mesophilic and hyperstable enzyme variants. A high correlation between the microfluidic and test tube data supports the approach robustness. The precision is coupled to a considerable throughput of >20 000 reactions per day and will be especially useful for extending the scope of microfluidic applications for high-throughput analysis of reactions including compounds with limited water solubility.
ER -
BURYŠKA, Tomáš, Michal VAŠINA, Fabrice GIELEN, Pavel VAŇÁČEK, Liisa VAN VLIET, Jan JEZEK, Zdenek PILAT, Pavel ZEMÁNEK, Jiří DAMBORSKÝ, Florian HOLLFELDER and Zbyněk PROKOP. Controlled Oil/Water Partitioning of Hydrophobic Substrates Extending the Bioanalytical Applications of Droplet-Based Microfluidics. \textit{Analytical Chemistry}. Washington, D.C.: AMER CHEMICAL SOC, 2019, vol.~91, No~15, p.~10008-10015. ISSN~0003-2700. Available from: https://dx.doi.org/10.1021/acs.analchem.9b01839.
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