Method for producing lysine by utilizing adsorption and immobilized fermentation of recombinant corynebacterium glutamicum
US11098331B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 10, 2020 |
| Grant date | Aug 24, 2021 |
| Priority date | — |
| Expiry date | Dec 10, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12N2310/20
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
The invention discloses a method for producing lysine by utilizing adsorption and immobilized fermentation of a recombinant Corynebacterium glutamicum, wherein the recombinant Corynebacterium glutamicum is constructed by simultaneously overexpressing an adenosine triphosphate ATPase while knocking out an extracellular nuclease ExeR in a Corynebacterium glutamicum. The recombinant Corynebacterium glutamicum can effectively improve eDNA secretion of the Corynebacterium glutamicum and reduce eDNA degradation of the Corynebacterium glutamicum, so that the Corynebacterium glutamicum can be more easily adsorbed on a surface of a solid carrier for immobilized fermentation, such that a yield of continuous immobilized fermentation of the Corynebacterium glutamicum is increased by 49.67% than that of free fermentation of an original bacterium, and a fermentation cycle is shortened by 29.17%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.