1. Development of an Escherichia coli whole cell biocatalyst for the production of hyperoside
- Author
-
Guo-Si Li, Fu-Cheng Zhu, Pei-Pei Wei, Fang-Li Gu, Qi-Ling Xu, and Meng-Hua Ma
- Subjects
Escherichia coli ,Galactose ,Quercetin ,Bioengineering ,General Medicine ,Applied Microbiology and Biotechnology ,Uridine Diphosphate ,Biotechnology - Abstract
To produce high concentrations of hyperoside from quercetin using recombinant Escherichia coli with in situ regeneration of UDP-galactose.Sucrose synthase from Glycine max (GmSUS) was co-expressed with UDP-glucose epimerase from E. coli (GalE) in E. coli for regenerating UDP-galactose from UDP and sucrose. Glycosyltransferase from Petunia hybrida (PhUGT) was introduced to synthesize hyperoside from quercetin through the regeneration system of UDP-galactose. Co-expressing with molecular chaperones GroEL/ES successfully enhanced the catalytic efficiency of the recombinant strain, which assisted the soluble expression of PhUGT. By using a fed-batch approach, the production of hyperoside reached 863.7 mg LThe method described herein for hyperoside production can be widely applied for the synthesis of isorhamnetin-3-O-galactoside, kaempferol-3-O-galactoside and other flavonoids.
- Published
- 2022