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High-throughput genetic engineering of nonmodel and undomesticated bacteria via iterative site-specific genome integration

Journal Article · · Science Advances
 [1];  [2];  [1];  [3];  [1];  [2];  [2];  [3];  [4];  [5];  [2];  [1]
  1. Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Biological Science Division
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Biosciences Division
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Biosciences Division; Univ. of Tennessee, Knoxville, TN (United States)
  4. Univ. of California, Berkeley, CA (United States)
  5. Univ. of California, Berkeley, CA (United States); US Dept. of Agriculture (USDA), Albany, CA (United States). Agricultural Research Service (ARS)

Efficient genome engineering is critical to understand and use microbial functions. Despite recent development of tools such as CRISPR-Cas gene editing, efficient integration of exogenous DNA with well-characterized functions remains limited to model bacteria. Here, we describe serine recombinase–assisted genome engineering, or SAGE, an easy-to-use, highly efficient, and extensible technology that enables selection marker–free, site-specific genome integration of up to 10 DNA constructs, often with efficiency on par with or superior to replicating plasmids. SAGE uses no replicating plasmids and thus lacks the host range limitations of other genome engineering technologies. We demonstrate the value of SAGE by characterizing genome integration efficiency in five bacteria that span multiple taxonomy groups and biotechnology applications and by identifying more than 95 heterologous promoters in each host with consistent transcription across environmental and genetic contexts. We anticipate that SAGE will rapidly expand the number of industrial and environmental bacteria compatible with high-throughput genetics and synthetic biology.

Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER)
Grant/Contract Number:
AC05-76RL01830; AC05-00OR22725
OSTI ID:
1962851
Alternate ID(s):
OSTI ID: 1962852
OSTI ID: 1997679
Report Number(s):
PNNL-SA--181397
Journal Information:
Science Advances, Journal Name: Science Advances Journal Issue: 10 Vol. 9; ISSN 2375-2548
Publisher:
AAASCopyright Statement
Country of Publication:
United States
Language:
English

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Persistence Control of Engineered Functions in Complex Soil Microbiomes (PerCon SFA), Secure Biosystems Design Project Data Catalog at PNNL DataHub dataset January 2023

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