Engineered bidirectional promoters enable rapid multi-gene co-expression optimization
Biggs, Bradley W.
Fischer, Jasmin E.
Ajikumar, Parayil K.
- Journal Article
Rights / licenseCreative Commons Attribution 4.0 International
Numerous synthetic biology endeavors require well-tuned co-expression of functional components for success. Classically, monodirectional promoters (MDPs) have been used for such applications, but MDPs are limited in terms of multi-gene co-expression capabilities. Consequently, there is a pressing need for new tools with improved flexibility in terms of genetic circuit design, metabolic pathway assembly, and optimization. Here, motivated by nature’s use of bidirectional promoters (BDPs) as a solution for efficient gene co-expression, we generate a library of 168 synthetic BDPs in the yeast Komagataella phaffii (syn. Pichia pastoris), leveraging naturally occurring BDPs as a parts repository. This library of synthetic BDPs allows for rapid screening of diverse expression profiles and ratios to optimize gene co-expression, including for metabolic pathways (taxadiene, β-carotene). The modular design strategies applied for creating the BDP library could be relevant in other eukaryotic hosts, enabling a myriad of metabolic engineering and synthetic biology applications Show more
Journal / seriesNature Communications
Pages / Article No.
PublisherNature Publishing Group
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Is referenced by: https://doi.org/10.1038/s41467-018-07112-1
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