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Title: Development of Chemical and Metabolite Sensors for Rhodococcus opacus PD630

Journal Article · · ACS Synthetic Biology

Rhodococcus opacus PD630 is a non-model, gram positive bacterium that possesses desirable traits for biomass conversion, including consumption capabilities for lignocellulose-based sugars and toxic lignin-derived aromatic compounds, significant triacylglycerol accumulation, relatively rapid growth rate, and genetic tractability. However, few genetic elements have been directly characterized in R. opacus, limiting its application for lignocellulose bioconversion. Here, we report the characterization and development of genetic tools for tunable gene expression in R. opacus, including: 1) six fluorescent reporters for quantifying promoter output, 2) three chemically inducible promoters for variable gene expression, and 3) two classes of metabolite sensors derived from native R. opacus promoters that detect nitrogen levels or aromatic compounds. Using these tools, we also provide insights into native aromatic consumption pathways in R. opacus. Overall, this work expands the ability to control and characterize gene expression in R. opacus for future lignocellulose-based fuel and chemical production.

Research Organization:
Washington Univ., St. Louis, MO (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER)
Grant/Contract Number:
SC0012705
OSTI ID:
1417982
Journal Information:
ACS Synthetic Biology, Vol. 6, Issue 10; ISSN 2161-5063
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 31 works
Citation information provided by
Web of Science

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Cited By (5)

Boosting Secondary Metabolite Production and Discovery through the Engineering of Novel Microbial Biosensors journal July 2018
Discovery of potential pathways for biological conversion of poplar wood into lipids by co-fermentation of Rhodococci strains journal March 2019
Development of Rhodococcus opacus as a chassis for lignin valorization and bioproduction of high-value compounds journal August 2019
Selection of stable reference genes for RT-qPCR in Rhodococcus opacus PD630 journal April 2018
Lipid metabolism of phenol-tolerant Rhodococcus opacus strains for lignin bioconversion journal December 2018