Reference - Detail
| RRC ID | 66220 |
|---|---|
| Author | Bernhardsgrütter I, Schell K, Peter DM, Borjian F, Saez DA, Vöhringer-Martinez E, Erb TJ. |
| Title | Awakening the Sleeping Carboxylase Function of Enzymes: Engineering the Natural CO2-Binding Potential of Reductases. |
| Journal | J Am Chem Soc |
| Abstract |
Developing new carbon dioxide (CO2) fixing enzymes is a prerequisite to create new biocatalysts for diverse applications in chemistry, biotechnology and synthetic biology. Here we used bioinformatics to identify a "sleeping carboxylase function" in the superfamily of medium-chain dehydrogenases/reductases (MDR), i.e. enzymes that possess a low carboxylation side activity next to their original enzyme reaction. We show that propionyl-CoA synthase from Erythrobacter sp. NAP1, as well as an acrylyl-CoA reductase from Nitrosopumilus maritimus possess carboxylation yields of 3 ± 1 and 4.5 ± 0.9%. We use rational design to engineer these enzymes further into carboxylases by increasing interactions of the proteins with CO2 and suppressing diffusion of water to the active site. The engineered carboxylases show improved CO2-binding and kinetic parameters comparable to naturally existing CO2-fixing enzymes. Our results provide a strategy to develop novel CO2-fixing enzymes and shed light on the emergence of natural carboxylases during evolution. |
| Volume | 141(25) |
| Pages | 9778-9782 |
| Published | 2019-6-26 |
| DOI | 10.1021/jacs.9b03431 |
| PMID | 31188584 |
| PMC | PMC6650136 |
| MeSH | Archaea / enzymology Archaeal Proteins / chemistry Archaeal Proteins / genetics Archaeal Proteins / metabolism Bacterial Proteins / chemistry Bacterial Proteins / genetics Bacterial Proteins / metabolism Carbon Cycle Carbon Dioxide / chemistry Carbon Dioxide / metabolism Carboxy-Lyases / chemistry* Carboxy-Lyases / genetics Carboxy-Lyases / metabolism Catalytic Domain / genetics Kinetics Molecular Dynamics Simulation Mutagenesis, Site-Directed Oxidoreductases / chemistry* Oxidoreductases / genetics Oxidoreductases / metabolism Sphingomonadaceae / enzymology Water / chemistry Water / metabolism |
| IF | 14.612 |
| Altmetric score |
オルトメトリクス指標項目
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| The most frequently cited source | X(Twitter) |
| Total number of mentions | 25 |
| Altmetric score changes over past 6months | 0.0 |
| Resource | |
| Prokaryotes E. coli | |