Signal peptide, L-glutamic acid synthesized using konjac flour and methods of using same
US10351816B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 23, 2015 |
| Grant date | Jul 16, 2019 |
| Priority date | — |
| Expiry date | Nov 23, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12Y302/01025
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
The present invention relates to application of a novel signal peptide in L-arginine and its derivatives production from konjac powder, which belongs to the field of gene engineering, enzyme engineering and metabolism engineering. The present invention fused the signal peptide set forth in SEQ ID NO.1 with the β-mannanase of Bacillus subtilis CCTCC M 209200, and expressed the fused gene in the strain with high L-arginine yield. The recombinant strain Corynebacterium crenatum CGMCC 0890/p MSPman had advantages on utilizing cheaper konjac powder as substrate, and after fermenting for 96 hours in a 5 L bioreactor, the L-arginine yield reached 45 g/L. Another two recombinant strains were constructed based on Corynebacterium crenatum CGMCC 0890/pMSPman, and after fermenting for 96 hours in a 5 L bioreactor, the L-ornithine yield and L-citrulline reached 23.5 g/L and 26.3 g/L respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.