Chemoenzymatic synthesis of CMP–sialic acid derivatives by a one-pot two-enzyme system: comparison of substrate flexibility of three microbial CMP–sialic acid synthetases
作者:Hai Yu、Hui Yu、Rebekah Karpel、Xi Chen
DOI:10.1016/j.bmc.2004.09.030
日期:2004.12
with pyruvate, catalyzed by a recombinant sialic acid aldolase [EC 4.1.3.3] cloned from E. coli K12 to provide sialic acid analogs as substrates for the CMP-sialicacid synthetases. The substrate flexibility and the reaction efficiency of the three recombinant CMP-sialicacid synthetases were compared, first by qualitative screening using thin layer chromatography, and then by quantitative analysis using
An N-terminal and C-terminal truncated recombinant α2–6-sialyltransferase cloned from Photobacterium sp. JH-ISH-224, Psp2,6ST(15–501)-His6, was shown to be an efficient catalyst for one-pot three-enzyme synthesis of sialyl Tn (STn) antigens and derivatives containing natural and non-natural sialic acid forms.
从发光杆菌属克隆的 N 端和 C 端截短的重组 α2-6-唾液酸转移酶。 JH-ISH-224, Psp2,6ST(15–501)-His6,被证明是一锅三酶合成唾液酸 Tn (STn) 抗原和含有天然和非天然唾液酸形式的衍生物的有效催化剂。
Highly Efficient Chemoenzymatic Synthesis of Naturally Occurring and Non-Natural α-2,6-Linked Sialosides: AP. damsela α-2,6-Sialyltransferase with Extremely Flexible Donor–Substrate Specificity