Systematic study on the broad nucleotide triphosphate specificity of the pyrophosphorylase domain of the N-acetylglucosamine-1-phosphate uridyltransferase from Escherichia coli K12
摘要:
N-Acetylglucosamine-1-phosphate uridyltransferase (GlmU) from Escherichia coli K12 is a bifunctional enzyme that catalyzes both the acetyltransfer and uridyltransfer reactions in the prokaryotic UDP-GlcNAc biosynthetic pathway. In this study, we report the broad substrate specificity of the pyrophosphorylase domain of GlmU during its uridyltransfer reaction and the substrate priority is ranked in the following order: UTP > dUTP > dTTP >> CTP > dATP/dm(6) ATP. This pyrophosphorylase domain of GlmU is also a tool to synthesize UDP-GlcNAc analogs, two examples of which were synthesized herein in multiple mg scale in vitro. (C) 2009 Elsevier Ltd. All rights reserved.
Systematic study on the broad nucleotide triphosphate specificity of the pyrophosphorylase domain of the N-acetylglucosamine-1-phosphate uridyltransferase from Escherichia coli K12
作者:Junqiang Fang、Wanyi Guan、Li Cai、Guofeng Gu、Xianwei Liu、Peng George Wang
DOI:10.1016/j.bmcl.2009.09.039
日期:2009.11
N-Acetylglucosamine-1-phosphate uridyltransferase (GlmU) from Escherichia coli K12 is a bifunctional enzyme that catalyzes both the acetyltransfer and uridyltransfer reactions in the prokaryotic UDP-GlcNAc biosynthetic pathway. In this study, we report the broad substrate specificity of the pyrophosphorylase domain of GlmU during its uridyltransfer reaction and the substrate priority is ranked in the following order: UTP > dUTP > dTTP >> CTP > dATP/dm(6) ATP. This pyrophosphorylase domain of GlmU is also a tool to synthesize UDP-GlcNAc analogs, two examples of which were synthesized herein in multiple mg scale in vitro. (C) 2009 Elsevier Ltd. All rights reserved.
A chemoenzymatic route to synthesize unnatural sugar nucleotides using a novel N-acetylglucosamine-1-phosphate pyrophosphorylase from Camphylobacter jejuni NCTC 11168
作者:Junqiang Fang、Mengyang Xue、Guofeng Gu、Xian-wei Liu、Peng George Wang
DOI:10.1016/j.bmcl.2013.06.003
日期:2013.8
A novel N-acetylglucosamine-1-phosphate pyrophosphorylase was identified from Campylobacter jejuni NCTC 11168. An unprecedented degree of substrate promiscuity has been revealed by systematic studies on its substrate specificities towards sugar-1-P and NTP. The yields of the synthetic reaction of seven kinds of sugar nucleotides catalyzed by the enzyme were up to 60%. In addition, the yields of the other nine were around 20%. With this enzyme, three novel sugar nucleotide analogs were synthesized on a preparative scale and well characterized. (C) 2013 Elsevier Ltd. All rights reserved.