Nowadays, the vastly increasing demand for novel biotechnological products is supported by the continuous development of biocatalytic applications that provide sustainable green alternatives to chemical processes. The success of a biocatalytic application is critically dependent on how quickly we can identify and characterize enzyme variants fitting the conditions of industrial processes. While miniaturization and parallelization have dramatically increased the throughput of next-generation sequencing systems, the subsequent characterization of the obtained candidates is still a limiting process in identifying the desired biocatalysts. Only a few commercial microfluidic systems for enzyme analysis are currently available, and the transformation of numerous published prototypes into commercial platforms is still to be streamlined. This review presents the state-of-the-art, recent trends, and perspectives in applying microfluidic tools in the functional and structural analysis of biocatalysts. We discuss the advantages and disadvantages of available technologies, their reproducibility and robustness, and readiness for routine laboratory use. We also highlight the unexplored potential of microfluidics to leverage the power of machine learning for biocatalyst development.

Institute for Chemical and Bioengineering ETH Zürich 8093 Zürich Switzerland

Institute for Chemical and Bioengineering ETH Zürich 8093 Zürich Switzerland; Department of Biochemistry University of Zurich 8057 Zurich Switzerland

Loschmidt Laboratories Department of Experimental Biology and RECETOX Faculty of Science Masaryk University 602 00 Brno Czech Republic; International Clinical Research Centre St Anne's University Hospital 656 91 Brno Czech Republic

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Engineering Dehalogenase Enzymes Using Variational Autoencoder-Generated Latent Spaces and Microfluidics

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10.6084/m9.figshare.21946568.v1