An Engineered Constitutive Promoter Set with Broad Activity Range for Cupriavidus necator H16

Autor: Miriam Gonzalez-Villanueva, Abayomi Oluwanbe Johnson, Tuck Seng Wong, Kang Lan Tee
Rok vydání: 2018
Předmět:
Zdroj: ACS Synthetic Biology. 7:1918-1928
ISSN: 2161-5063
Popis: Well-characterized promoters with variable strength form the foundation of heterologous pathway optimization. It is also a key element that bolsters the success of microbial engineering and facilitates the development of biological tools like biosensors. In comparison to microbial hosts such as Escherichia coli and Saccharomyces cerevisiae, the promoter repertoire of Cupriavidus necator H16 is highly limited. This limited number of characterized promoters poses a significant challenge during the engineering of C. necator H16 for biomanufacturing and biotechnological applications. In this article, we first examined the architecture and genetic elements of the four most widely used constitutive promoters of C. necator H16 (i.e., PphaC1, PrrsC, Pj5, and Pg25) and established a narrow 6-fold difference in their promoter activities. Next, using these four promoters as starting points and applying a range of genetic modifications (including point mutation, length alteration, incorporation of regulatory genetic ...
Databáze: OpenAIRE