Strategies for the expression and characterization of artificial myoglobin-based carbene transferases.

Strategies for the expression and characterization of artificial myoglobin-based carbene transferases.
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DOI:
10.1016/bs.mie.2020.07.007
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发表时间:
2020
影响因子:
--
通讯作者:
Fasan R
Fasan R
中科院分区:
生物学4区
文献类型:
--
作者:
Carminati DM;Moore EJ;Fasan R

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Myoglobin has recently emerged as a versatile metalloprotein scaffold for the design of efficient and selective biocatalysts for abiological carbene transfer reactions, including asymmetric cyclopropanation reactions. Over the past few years, our group have explored several strategies to modulate the carbene transfer reactivity of myoglobin-based catalysts, including the substitution of the native heme cofactor and conserved histidine axial ligand with non-native porphynoid ligands and alternative natural and unnatural amino acids as the metal-coordinating ligands, respectively. Herein, we report protocols for the generation and reconstitution in vitro and in vivo of myoglobin-based artificial carbene transferases incorporating non-native iron-porphynoid cofactors, also in combination with unnatural amino acids as the proximal ligand. These strategies are effective for impart these myoglobin-based cyclopropanation biocatalysts with altered and improved function, including tolerance to aerobic conditions and improved reactivity toward electrondeficient olefins.
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发表时间: 2018-11-26
期刊: Angewandte Chemie (International ed. in English)
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