Double enzyme tandem preparation method of l-2-aminobutyric acid
US12031165B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 17, 2021 |
| Grant date | Jul 9, 2024 |
| Priority date | — |
| Expiry date | Feb 24, 2043 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12Y504/03009
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
Disclosed is a double enzyme tandem preparation method of L-2-aminobutyric acid, and belongs to the field of bioengineering. In the disclosure, recombinant Escherichia coli expressing L-glutamate mutase and recombinant Escherichia coli expressing L-aspartate-β-decarboxylase are separately cultured to obtain L-glutamate mutase and L-aspartate-β-decarboxylase. The two enzymes are added to a reaction system at a certain mass ratio, and L-glutamate is used as a substrate to carry out an enzyme reaction to prepare the L-2-aminobutyric acid. When the dosage of the L-aspartate-β-decarboxylase is 2 mg/mL, and the reaction time is 24 h, 8.5 mmol/L L-2-aminobutyric acid is produced by conversion, with a molar conversion rate of 85.00%. Compared with a chemical production method, the method disclosed by the disclosure has a safe production process and no environmental pollution. Compared with a multi-enzyme synthesis system with threonine as a substrate, the substrate is cheaper and the process is simpler.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.