Synthesis of nucleotide sugars and α-galacto-oligosaccharides by recombinant Escherichia coli cells with trehalose substrate

Soo In Ryu, Soo Bok Lee

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Useful nucleoside diphosphate (NDP)-sugars and α-galacto-oligosaccharides were synthesized by recombinant Escherichia coli whole cells and compared to those produced by enzyme-coupling. Production yields of NDP-glucoses (Glcs) by whole cells harboring trehalose synthase (TS) were 60% for ADP-Glc, 82% for GDP-Glc, and 27% for UDP-Glc, based on NDP used. Yield of UDP-galactose (Gal) by the whole-cell harboring a UDP-Gal 4-epimerase (pGALE) was 26% of the quantity of UDP-Glc. α-Galacto-oligosaccharides, α-Gal epitope (Galα-3Galβ-4Glu) and globotriose (Galα-4Galβ-4Glu), were produced by the combination of three recombinant whole cells harboring TS, pGALE, and α-galactosyltransferase, with production yields of 48% and 54%, based on UDP, respectively. Production yields of NDP-sugars and α-galacto-oligosaccharides by recombinant whole-cell reactions were approximately 1.5 times greater than those of enzyme-coupled reactions. These results suggest that a recombinant whole-cell system using cells harboring TS with trehalose as a substrate may be used as an alternative and practical method for the production of NDP-sugars and α-galacto-oligosaccharides.

Original languageEnglish
Pages (from-to)359-363
Number of pages5
JournalEnzyme and Microbial Technology
Volume53
Issue number5
DOIs
Publication statusPublished - 2013 Oct 10

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Bioengineering
  • Biochemistry
  • Applied Microbiology and Biotechnology

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