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Assembly and Evolution of Artificial Metalloenzymes within E. coli Nissle 1917 for Enantioselective and Site-Selective Functionalization of C–H and C=C Bonds

Journal Article · · Journal of the American Chemical Society
DOI:https://doi.org/10.1021/jacs.1c10975· OSTI ID:1961807
 [1];  [2];  [1];  [1];  [1];  [3];  [1]
  1. Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Joint BioEnergy Institute (JBEI), Emeryville, CA (United States)
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Joint BioEnergy Institute (JBEI), Emeryville, CA (United States); Univ. of California, Berkeley, CA (United States); Shenzhen Institutes for Advanced Technologies, Shenzhen (China); Danish Technical University, Lyngby (Denmark)

The potential applications afforded by the generation and reactivity of artificial metalloenzymes (ArMs) in microorganisms are vast. Here we show that a non-pathogenic E. coli strain, Nissle 1917 (EcN), is a suitable host for the creation of ArMs from cytochrome P450s and artificial heme cofactors. An outer-membrane receptor in EcN transports an iridium porphyrin into the cell, and the Ir-CYP119 (CYP119 containing iridium porphyrin) assembled in vivo catalyzes carbene insertions into benzylic C-H bonds enantioselectively and site-selectively. The application of EcN as a whole-cell screening platform eliminates the need for laborious processing procedures, drastically increases the ease and throughput of screening, and accelerates the development of Ir-CYP119 with improved catalytic properties. Studies to identify the transport machinery suggest that a transporter different from the previously assumed ChuA receptor serves to usher the iridium porphyrin into the cytoplasm.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division; USDOE Laboratory Directed Research and Development (LDRD) Program; National Science Foundation (NSF); National Institutes of Health (NIH); Joint Bioenergy Institute Project
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1961807
Journal Information:
Journal of the American Chemical Society, Journal Name: Journal of the American Chemical Society Journal Issue: 2 Vol. 144; ISSN 0002-7863
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

References (34)

Towards the Evolution of Artificial Metalloenzymes—A Protein Engineer's Perspective journal February 2019
Site‐Selective Functionalization of (sp 3 )C−H Bonds Catalyzed by Artificial Metalloenzymes Containing an Iridium‐Porphyrin Cofactor journal September 2019
Orthogonal Expression of an Artificial Metalloenzyme for Abiotic Catalysis journal November 2017
Cytochrome P450 oxygenases of Taxol biosynthesis journal October 2006
Structural biology of bacterial iron uptake journal September 2008
Intramolecular C(sp3)H amination of arylsulfonyl azides with engineered and artificial myoglobin-based catalysts journal October 2014
Selective C–H bond functionalization using repurposed or artificial metalloenzymes journal April 2017
Selective C H bond functionalization with engineered heme proteins: new tools to generate complexity journal April 2019
The Siderophore Binding Protein FeuA Shows Limited Promiscuity toward Exogenous Triscatecholates journal July 2011
Cytochrome P450: taming a wild type enzyme journal December 2011
Artificial Metalloenzymes on the Verge of New-to-Nature Metabolism journal January 2018
Improved Method for the Incorporation of Heme Cofactors into Recombinant Proteins Using Escherichia coli Nissle 1917 journal April 2018
Artificial Metalloenzymes: Reaction Scope and Optimization Strategies journal May 2017
Chemical Optimization of Whole-Cell Transfer Hydrogenation Using Carbonic Anhydrase as Host Protein journal April 2019
Beyond Iron: Iridium-Containing P450 Enzymes for Selective Cyclopropanations of Structurally Diverse Alkenes journal April 2017
Artificial Metalloenzymes: Challenges and Opportunities journal July 2019
A Simple Combinatorial Codon Mutagenesis Method for Targeted Protein Engineering journal January 2017
Ru-Porphyrin Protein Scaffolds for Sensing O 2 journal April 2010
Metal-Substituted Protein MRI Contrast Agents Engineered for Enhanced Relaxivity and Ligand Sensitivity journal February 2011
Chemoselective, Enzymatic C–H Bond Amination Catalyzed by a Cytochrome P450 Containing an Ir(Me)-PIX Cofactor journal January 2017
Construction of Escherichia coli K-12 in-frame, single-gene knockout mutants the Keio collection journal February 2006
Directed evolution of artificial metalloenzymes for in vivo metathesis journal August 2016
Enantioselective, intermolecular benzylic C–H amination catalysed by an engineered iron-haem enzyme journal May 2017
Unnatural biosynthesis by an engineered microorganism with heterologously expressed natural enzymes and an artificial metalloenzyme journal October 2021
Enzymatic assembly of carbon–carbon bonds via iron-catalysed sp3 C–H functionalization journal December 2018
Structure of colicin I receptor bound to the R-domain of colicin Ia: implications for protein import journal April 2007
Enzymatic functionalization of carbon–hydrogen bonds journal January 2011
E. coli surface display of streptavidin for directed evolution of an allylic deallylase journal January 2018
Combining enzymes and organometallic complexes: novel artificial metalloenzymes and hybrid systems for C–H activation chemistry journal January 2019
Non-iron metalloporphyrins: potent antibacterial compounds that exploit haem/Hb uptake systems of pathogenic bacteria journal January 1999
An artificial metalloenzyme with the kinetics of native enzymes journal October 2016
Analysis of the Genome Structure of the Nonpathogenic Probiotic Escherichia coli Strain Nissle 1917 journal August 2004
Bacterial cytochrome P450-catalyzed regio- and stereoselective steroid hydroxylation enabled by directed evolution and rational design journal January 2020
Regioselective hydroxylation of steroid hormones by human cytochromes P450 journal February 2015