Unnatural biosynthesis by an engineered microorganism with heterologously expressed natural enzymes and an artificial metalloenzyme

Huang, Jing; Liu, Zhennan; Bloomer, Brandon J.; Clark, Douglas S.; Mukhopadhyay, Aindrila; Keasling, Jay D.; Hartwig, John F.

doi:10.1038/s41557-021-00801-3

Unnatural biosynthesis by an engineered microorganism with heterologously expressed natural enzymes and an artificial metalloenzyme

Journal Article · Thu Oct 14 00:00:00 EDT 2021 · Nature Chemistry

DOI:https://doi.org/10.1038/s41557-021-00801-3· OSTI ID:2469700

Huang, Jing ^[1]; Liu, Zhennan ^[2]; Bloomer, Brandon J. ^[2]; ^[2]; ^[1]; ^[3]; ^[2]

Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
University of California, Berkeley, CA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); University of California, Berkeley, CA (United States); Shenzhen Institutes for Advanced Technologies (China); Danish Technical Univ., Lyngby (Denmark)

Synthetic biology enables microbial hosts to produce complex molecules from organisms that are rare or difficult to cultivate, but the structures of these molecules are limited to those formed by reactions of natural enzymes. The integration of artificial metalloenzymes (ArMs) that catalyse unnatural reactions into metabolic networks could broaden the cache of molecules produced biosynthetically. Here, in this work, we report an engineered microbial cell expressing a heterologous biosynthetic pathway, containing both natural enzymes and ArMs, that produces an unnatural product with high diastereoselectivity. We engineered Escherichia coli with a heterologous terpene biosynthetic pathway and an ArM containing an iridium–porphyrin complex that was transported into the cell with a heterologous transport system. We improved the diastereoselectivity and product titre of the unnatural product by evolving the ArM and selecting the appropriate gene induction and cultivation conditions. This work shows that synthetic biology and synthetic chemistry can produce, by combining natural and artificial enzymes in whole cells, molecules that were previously inaccessible to nature.

View Accepted Manuscript (DOE)

Research Organization:: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

Sponsoring Organization:: USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE Office of Science (SC), Biological and Environmental Research (BER)

Grant/Contract Number:: AC02-05CH11231

OSTI ID:: 2469700

Journal Information:: Nature Chemistry, Journal Name: Nature Chemistry Journal Issue: 12 Vol. 13; ISSN 1755-4330

Publisher:: Nature Publishing GroupCopyright Statement

Country of Publication:: United States

Language:: English

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