Converging Chemistry and Biology: Chemoenzymatic Cascade Reactions and Biohybrid Catalysts

A special issue of Catalysts (ISSN 2073-4344). This special issue belongs to the section "Biocatalysis".

Deadline for manuscript submissions: closed (30 June 2021) | Viewed by 10564

Special Issue Editor


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Guest Editor
Rheinisch-Westfälische Technische Hochschule Aachen University, Aachen, Germany
Interests: Biohybrid catalysis, artificial metalloenzymes, homogeneous catalysis, olefin metathesis, tandem catalysis, biotechnology

Special Issue Information

Dear Colleagues,

Biocatalysis is highly efficient and comes along with a remarkable selectivity. Large-scale chemical production is challenging due to enzyme stability and downstream processing is often expensive and laborious. Chemocatalysis, homogeneously or heterogeneously catalyzed reactions, has a broad reaction scope but is often limited by diffusion or excess to the active site. Additionally, performing reactions selectively requires laborious catalyst design. The convergence of research fields opens new possibilities for reaction design. Chemoenzymatic cascades combine the best of both worlds: the remarkable selectivity of biocatalysis and the broad reaction scope of chemocatalysis. Combining biocatalysis and chemocatalysis need a precise design of reaction conditions and a proper reaction media. Nonetheless, the advantages of combining both outweigh the efforts of developing the reaction interface: reduced downstream processing and reduced process costs. Furthermore, chemoenzymatic cascades allow the use of instable intermediates, as they are converted quickly in the reaction sequence.

This special issue aims to highlight the recent progress and advances in the field of chemoenzymatic catalysis. This special issue includes, but is not limited to, reaction sequences that consist of at least on enzymatic and one chemical reaction step. The reactions can be performed in a concurrent or in a sequential fashion. Furthermore, new methodologies to achieve compartmentalization for one of the catalytic components as well as new catalysts (e.g., biohybrid catalysts, immobilized enzymes, artificial (metallo)enzymes) that can be used in such reactions are welcome for publications.

 

Dr. Daniel Friedrich Sauer
Guest Editor

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Keywords


  • artificial metalloenzymes
  • biohybrid catalysis
  • enzyme catalysis
  • tandem catalysis
  • chemoenzymatic catalysis
  • carbon-carbon bond formation
  • homogeneous catalysis
  • cascade reactions
  • heterogeneous catalysis
  • biphasic systems
  • concurrent cascade reactions
  • sequential cascade reactions

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Published Papers (2 papers)

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Research

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14 pages, 2121 KiB  
Article
A Combined Bio-Chemical Synthesis Route for 1-Octene Sheds Light on Rhamnolipid Structure
by Till Tiso, Daniel F. Sauer, Klaus Beckerle, Christian C. Blesken, Jun Okuda and Lars M. Blank
Catalysts 2020, 10(8), 874; https://doi.org/10.3390/catal10080874 - 4 Aug 2020
Cited by 9 | Viewed by 4146
Abstract
Here we report a chemoenzymatic approach to synthesize 1-octene from carbohydrates via ethenolysis of rhamnolipids. Rhamnolipids synthesized by P. putida contain a double bond between carbon five and six, which is experimentally confirmed via olefin cross metathesis. Utilizing these lipids in the ethenolysis [...] Read more.
Here we report a chemoenzymatic approach to synthesize 1-octene from carbohydrates via ethenolysis of rhamnolipids. Rhamnolipids synthesized by P. putida contain a double bond between carbon five and six, which is experimentally confirmed via olefin cross metathesis. Utilizing these lipids in the ethenolysis catalyzed by a Grubbs−Hoveyda-type catalyst selectively generates 1-octene and with good conversions. This study shows the potential of chemoenzymatic approaches to produce compounds for the chemical industry from renewable resources. Full article
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Review

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25 pages, 11210 KiB  
Review
Functionalization of Ruthenium Olefin-Metathesis Catalysts for Interdisciplinary Studies in Chemistry and Biology
by Takashi Matsuo
Catalysts 2021, 11(3), 359; https://doi.org/10.3390/catal11030359 - 10 Mar 2021
Cited by 18 | Viewed by 5622
Abstract
Hoveyda–Grubbs-type complexes, ruthenium catalysts for olefin metathesis, have gained increased interest as a research target in the interdisciplinary research fields of chemistry and biology because of their high functional group selectivity in olefin metathesis reactions and stabilities in aqueous media. This review article [...] Read more.
Hoveyda–Grubbs-type complexes, ruthenium catalysts for olefin metathesis, have gained increased interest as a research target in the interdisciplinary research fields of chemistry and biology because of their high functional group selectivity in olefin metathesis reactions and stabilities in aqueous media. This review article introduces the application of designed Hoveyda–Grubbs-type complexes for bio-relevant studies including the construction of hybrid olefin metathesis biocatalysts and the development of in-vivo olefin metathesis reactions. As a noticeable issue in the employment of Hoveyda–Grubbs-type complexes in aqueous media, the influence of water on the catalytic activities of the complexes and strategies to overcome the problems resulting from the water effects are also discussed. In connection to the structural effects of protein structures on the reactivities of Hoveyda–Grubbs-type complexes included in the protein, the regulation of metathesis activities through second-coordination sphere effect is presented, demonstrating that the reactivities of Hoveyda–Grubbs-type complexes are controllable by the structural modification of the complexes at outer-sphere parts. Finally, as a new-type reaction based on the ruthenium-olefin specific interaction, a recent finding on the ruthenium complex transfer reaction between Hoveyda–Grubbs-type complexes and biomolecules is introduced. Full article
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