The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 14, 2021
Filed:
Mar. 12, 2019
Jiangnan University, Wuxi, CN;
Long Liu, Wuxi, CN;
Yang Gu, Wuxi, CN;
Jieying Deng, Wuxi, CN;
Jian Chen, Wuxi, CN;
Guocheng Du, Wuxi, CN;
Jianghua Li, Wuxi, CN;
Jiangnan University, Wuxi, CN;
Abstract
The present invention relates to a method for promoting acetylglucosamine synthesis of, which belongs to the field of genetic engineering. The present invention adopts the recombinantBSGNKAP2 as a starting strain, exogenously introducing pyruvate carboxylase BalpycA derived from, eliminating the central carbon metabolism overflow of theand avoiding the synthesis of the by-product acetoin; further, five exogenous reducing force metabolic reactions are introduced to replace the reaction of generating NADH in glycolysis pathway and tricarboxylic acid cycle to reconstruct intracellular reducing force metabolism, which specifically comprise glyceraldehyde-3-phosphate ferredoxin dehydrogenase, isocitrate NADdehydrogenase, a malate quinone dehydrogenase, a ketoacid ferredoxin oxidoreductase and a nitrogenase ferritin. In a shake-flask fermentation process using a complex medium, acetylglucosamine yield of the recombinant strain BSGNKAP8 is 24.50 g/L, acetylglucosamine/glucose yield is 0.469 g/g, respectively 1.97 times and 2.13 times of those of the starting strain BSGNKAP2.