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Artificial Metalloenzymes: From Selective Chemical Transformations to Biochemical Applications

1
National Institute of Advanced Industrial Science and Technology, Ikeda, Osaka 563-8577, Japan
2
DBT-AIST International Laboratory for Advanced Biomedicine (DAILAB), Ikeda, Osaka 563-8577, Japan
3
Frontier Research Institute for Interdisciplinary Sciences, Tohoku University, 6-3 Aramaki aza Aoba, Aoba-ku, Sendai 980-8578, Japan
*
Author to whom correspondence should be addressed.
Academic Editor: Isabella Rimoldi
Molecules 2020, 25(13), 2989; https://doi.org/10.3390/molecules25132989
Received: 26 May 2020 / Revised: 26 June 2020 / Accepted: 27 June 2020 / Published: 30 June 2020
(This article belongs to the Special Issue Hybrid Catalysts for Asymmetric Catalysis)
Artificial metalloenzymes (ArMs) comprise a synthetic metal complex in a protein scaffold. ArMs display performances combining those of both homogeneous catalysts and biocatalysts. Specifically, ArMs selectively catalyze non-natural reactions and reactions inspired by nature in water under mild conditions. In the past few years, the construction of ArMs that possess a genetically incorporated unnatural amino acid and the directed evolution of ArMs have become of great interest in the field. Additionally, biochemical applications of ArMs have steadily increased, owing to the fact that compartmentalization within a protein scaffold allows the synthetic metal complex to remain functional in a sea of inactivating biomolecules. In this review, we present updates on: 1) the newly reported ArMs, according to their type of reaction, and 2) the unique biochemical applications of ArMs, including chemoenzymatic cascades and intracellular/in vivo catalysis. We believe that ArMs have great potential as catalysts for organic synthesis and as chemical biology tools for pharmaceutical applications.
Keywords: artificial metalloenzyme; organometallic catalysis; protein engineering; selective chemical transformation; chemoenzymatic cascade; directed evolution; intracellular catalysis artificial metalloenzyme; organometallic catalysis; protein engineering; selective chemical transformation; chemoenzymatic cascade; directed evolution; intracellular catalysis
MDPI and ACS Style

Himiyama, T.; Okamoto, Y. Artificial Metalloenzymes: From Selective Chemical Transformations to Biochemical Applications. Molecules 2020, 25, 2989.

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