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Title: Mechanism‐Guided Design of Highly Efficient Protein Secretion and Lipid Conversion for Biomanufacturing and Biorefining

Journal Article · · Advanced Science
ORCiD logo [1];  [1];  [1];  [1];  [2];  [1];  [1];  [1];  [3];  [3];  [4];  [5]; ORCiD logo [1]
  1. Synthetic and Systems Biology Innovation Hub and Department of Plant Pathology and MicrobiologyTexas A&,M University College Station TX 77843 USA
  2. Joint Institute for Biological Sciences and Biosciences DivisionOak Ridge National Laboratory Oak Ridge TN 37831 USA
  3. Department of Chemical Engineering and Materials ScienceMichigan State University East Lansing MI 48824 USA
  4. Joint Institute for Biological Sciences and Biosciences DivisionOak Ridge National Laboratory Oak Ridge TN 37831 USA, Department of Chemical and Biomolecular Engineering &, Department of Forestry, Wildlife, and FisheriesUniversity of Tennessee Knoxville TN 37996 USA
  5. Synthetic and Systems Biology Innovation Hub and Department of Plant Pathology and MicrobiologyTexas A&,M University College Station TX 77843 USA, State Hygienic LaboratoryUniversity of Iowa Coralville IA 52246 USA

Bacterial protein secretion represents a significant challenge in biotechnology, which is essential for the cost-effective production of therapeutics, enzymes, and other functional proteins. Here, it is demonstrated that proteomics-guided engineering of transcription, translation, secretion, and folding of ligninolytic laccase balances the process, minimizes the toxicity, and enables efficient heterologous secretion with a total protein yield of 13.7 g L-1. The secretory laccase complements the biochemical limits on lignin depolymerization well in Rhodococcus opacus PD630. Further proteomics analysis reveals the mechanisms for the oleaginous phenotype of R. opacus PD630, where a distinct multiunit fatty acid synthase I drives the carbon partition to storage lipid. The discovery guides the design of efficient lipid conversion from lignin and carbohydrate. The proteomics-guided integration of laccase-secretion and lipid production modules enables a high titer in converting lignin-enriched biorefinery waste to lipid. The fundamental mechanisms, engineering components, and design principle can empower transformative platforms for biomanufacturing and biorefining.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Grant/Contract Number:
EE0006112; EE0007104; EE0008250; AC05-00OR22725
OSTI ID:
1510339
Alternate ID(s):
OSTI ID: 1510340; OSTI ID: 1530062; OSTI ID: 1606678
Journal Information:
Advanced Science, Journal Name: Advanced Science; ISSN 2198-3844
Publisher:
WileyCopyright Statement
Country of Publication:
Germany
Language:
English
Citation Metrics:
Cited by: 45 works
Citation information provided by
Web of Science

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