Asparaginic acid kinase III mutant and host cells and use thereof
US9896734B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | May 16, 2013 |
| Grant date | Feb 20, 2018 |
| Priority date | — |
| Expiry date | May 16, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12Y207/02004
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
Provided in the present invention is an asparaginic acid kinase, and the 340th amino acid residue in the position of the amino acid sequence of the asparaginic acid kinase corresponding to the amino acid sequence shown in SEQ ID NO: 2 is a non-aspartic acid. The asparaginic acid of the present invention can efficiently relieve the feedback inhibition of L-lysine, and can be effectively used for the production of L-lysine. Also provided in the present invention are host cells comprising genes coding the asparaginic acid kinase and a method for producing L-lysine using the host cells or the asparaginic acid kinase. The asparaginic acid kinase of the present invention or the host cells comprising the asparaginic acid kinase of the present invention is also used to produce L-threonine, L-methionine, L-isoleucine or L-valine. Also provided in the present invention is a method of producing L-aspartyl-4-yl phosphoric acid using the asparaginic acid kinase or the host cells.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.