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Published on: June 28, 2018
A synthetic luxCDABE gene cluster optimized for expression in high-GC bacteria
Arryn Craney1, Tobias Hohenauer, Ye Xu
1Biochemistry & Biomedical Sciences, McMaster University, Health Sciences Centre, Hamilton, Ontario, Canada.
Nucleic Acids Research
|March 6, 2007
Summary
Researchers engineered a synthetic luxCDABE operon for improved expression in high-GC bacteria like Streptomyces coelicolor. This novel reporter system accurately tracks complex gene expression during bacterial development.
Area of Science:
- Microbiology
- Molecular Biology
- Synthetic Biology
Background:
- The Photorhabdus luminescens luxCDABE operon is a valuable transcriptional reporter.
- Its AT-rich sequence limits expression in high-GC content bacteria, such as Streptomyces coelicolor.
- Efficient reporters are crucial for studying gene expression in diverse bacterial species.
Purpose of the Study:
- To engineer a synthetic luxCDABE operon optimized for high-GC bacteria.
- To validate the functionality and accuracy of the synthetic operon in Streptomyces coelicolor.
- To provide a versatile tool for studying gene expression in high-GC bacteria.
Main Methods:
- Constructed a synthetic luxCDABE operon with codon optimization for high-GC content.
- Created transcriptional fusions of the synthetic lux genes to characterized Streptomyces coelicolor promoters (hrdB, ramC, whiE).
- Assessed reporter gene expression patterns during Streptomyces coelicolor development.
Main Results:
- The synthetic luxCDABE operon is functional in Streptomyces coelicolor.
- The reporter system accurately reflects complex gene expression patterns during bacterial development.
- The engineered operon overcomes the expression limitations of the native sequence in high-GC hosts.
Conclusions:
- The synthetic luxCDABE operon serves as an effective transcriptional reporter in high-GC bacteria.
- This engineered system accurately monitors developmental gene expression.
- The methodology for creating synthetic high-GC genes is broadly applicable to research on these bacteria.
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