Bacillus subtilis efficiently-induced expression system based on artificial series promoter
US12098373B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 28, 2021 |
| Grant date | Sep 24, 2024 |
| Priority date | — |
| Expiry date | Apr 11, 2043 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12N2830/006
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
The present disclosure discloses a Bacillus subtilis efficiently-induced expression system based on an artificial series promoter, and belongs to the technical field of gene engineering. According to the present disclosure, an efficient artificial series constitutive promoter is used, and by compositely designing the promoter and elements (a repressor and a binding site thereof) relevant to an operon, the activity of the constitutive promoter is regulated and controlled by an inducer to finally construct the B. subtilis efficiently-induced expression system induced by the inducer. The result indicates that compared with a P43 strongly constitutive promoter, the activity of the artificial series promoter in the system is about 15 times higher. The activity of the promoter can be accurately controlled by adding different concentrations of inducers. Therefore, the efficient expression system is simple in structure, high in activity and strict in regulating and controlling and has wide application prospects in heterologous protein efficient expression and synthetic biology research.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.