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Journal Article

A new-to-nature carboxylation module to improve natural and synthetic CO2 fixation

MPS-Authors
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Schuller,  Sandra K.
Conti, Elena / Structural Cell Biology, Max Planck Institute of Biochemistry, Max Planck Society;

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Bollschweiler,  Daniel
Scientific Service Groups, Max Planck Institute of Biochemistry, Max Planck Society;

/persons/resource/persons98592

Schuller,  Jan M.
Conti, Elena / Structural Cell Biology, Max Planck Institute of Biochemistry, Max Planck Society;

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s41929-020-00557-y.pdf
(Publisher version), 4MB

Supplementary Material (public)

41929_2020_557_MOESM1_ESM.pdf
(Supplementary material), 17MB

Citation

Scheffen, M., Marchal, D. G., Beneyton, T., Schuller, S. K., Klose, M., Diehl, C., et al. (2021). A new-to-nature carboxylation module to improve natural and synthetic CO2 fixation. Nature Catalysis, 4, 104-115. doi:10.1038/s41929-020-00557-y.


Cite as: https://hdl.handle.net/21.11116/0000-0007-D559-5
Abstract
The capture of CO2 by carboxylases is key to sustainable biocatalysis and a carbon-neutral bio-economy, yet currently limited to few naturally existing enzymes. Here, we developed glycolyl-CoA carboxylase (GCC), a new-to-nature enzyme, by combining rational design, high-throughput microfluidics and microplate screens. During this process, GCC's catalytic efficiency improved by three orders of magnitude to match the properties of natural CO2-fixing enzymes. We verified our active-site redesign with an atomic-resolution, 1.96-angstrom cryo-electron microscopy structure and engineered two more enzymes that, together with GCC, form a carboxylation module for the conversion of glycolate (C-2) to glycerate (C-3). We demonstrate how this module can be interfaced with natural photorespiration, ethylene glycol conversion and synthetic CO2 fixation. Based on stoichiometrical calculations, GCC is predicted to increase the carbon efficiency of all of these processes by up to 150% while reducing their theoretical energy demand, showcasing how expanding the solution space of natural metabolism provides new opportunities for biotechnology and agriculture.