Enzymatic synthesis of UDP-GlcN by a two step hollow fiber enzyme reactor system

Philip A. Ropp, Pi Wan Cheng

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


UDP-GlcN was synthesized from GlcN and UTP by a two step hollow fiber enzyme reactor method. In step 1, GlcN was converted to GlcN 6-P and then to GlcN 1-P by hexokinase and phosphoglucomutase, respectively, and UTP was used as the phosphate donor. In step 2, GlcN 1-P was converted to UDP-GlcN by UDP glucose pyrophosphorylase. All the enzymes required for the synthesis of UDP-GlcN were enclosed in hollow fiber bundles which allow for the free diffusion of substrates and products across the membranes to and from the enzymes, allow for the reutilization of the enzymes, and simplify the isolation of the product, UDP-GlcN. We show that both UTP and GlcN 6-P are inhibitors of the yeast UDPG pyrophosphorylase and therefore their concentrations must be regulated to obtain maximum yields of UDP-GlcN. The UDP-GlcN produced can be N-acetylated with [14C]acetic anhydride to produce UDP-[14C]GlcNAc. This method can also be used to synthesize [32P]UDP-GlcN and [32P]UDP-GlcNAc from [α-32P]UTP and GlcN 1-P.

Original languageEnglish (US)
Pages (from-to)104-108
Number of pages5
JournalAnalytical Biochemistry
Issue number1
StatePublished - May 15 1990
Externally publishedYes

ASJC Scopus subject areas

  • Biophysics
  • Biochemistry
  • Molecular Biology
  • Cell Biology


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