详细信息

重组胸苷磷酸化酶在大肠杆菌中的表达和1-(2-脱氧-β-D-呋喃核糖基)-1,2,4-三唑-3-甲酰胺的生成    

Expression of Recombinant Thymidine Phosphorylase in E.coli and the Formation of 1-(2-Deoxy-β-D-ribofuranosyl)-1,2,4-triazole-3-carboxamide

文献类型:期刊文献

中文题名:重组胸苷磷酸化酶在大肠杆菌中的表达和1-(2-脱氧-β-D-呋喃核糖基)-1,2,4-三唑-3-甲酰胺的生成

英文题名:Expression of Recombinant Thymidine Phosphorylase in E.coli and the Formation of 1-(2-Deoxy-β-D-ribofuranosyl)-1,2,4-triazole-3-carboxamide

作者:丁翠敏[1];丁庆豹[1];欧阳立明[1];欧伶[1];邱蔚然[2]

机构:[1]华东理工大学生物反应器工程国家重点实验室,上海200237;[2]上海秋之友生物科技有限公司,上海200235

年份:2008

卷号:39

期号:8

起止页码:584

中文期刊名:中国医药工业杂志

外文期刊名:Chinese Journal of Pharmaceuticals

收录:CSTPCD;;北大核心:【北大核心2004】;CSCD:【CSCD2011_2012】;

基金:科技部科技型中小企业技术创新基金(07C26213100222)

语种:中文

中文关键词:胸苷磷酸化酶;表达;1-(2-脱氧-β-D-呋喃核糖基)-1;2;4-三唑-3-甲酰胺;优化

外文关键词:thymidine phosphorylase; expression; 1- (2-deoxy-β-D-ribofuranosyl)-l,2,4-triazole-3-carboxamide;optimization

摘要:研究了大肠杆菌BL21(DE3)中重组胸苷磷酸化酶的最佳诱导表达条件及1-(2-脱氧-β-D-呋喃核糖基)-1,2,4-三唑-3-甲酰胺(1)的最佳生成条件。菌体培养3.5h时加入8mmol/L乳糖诱导6h后,胸苷磷酸化酶的酶活力为2.14×104u/mg湿菌体。5%湿菌体在pH7.0的0.1mol/L Tris-HCl缓冲液中与底物胸苷、1,2,4-三唑-3-甲酰胺于50℃反应5h后,所得1的转化率大于90%。
The induction and expression conditions of recombinant thymidine phosphorylase (Tpase) in E. coli BL (DE3) as well as the synthetic conditions of 1- (2-deoxy--β-D-ribofuranosyl) -1,2,4-triazole-3-carboxamide (1) were optimized. After the strain was cultured for 3.5h, 8mmol/L lactose was added and induced for 6h. The enzyme activity of Tpase reached to 2.14× 10^4u/mg wet cells. When 5 % wet cells were added into 0.1mol/L Tris-HC1 buffer solution (pH 7.0) and reacted for 5h at 50℃ with thymidine and 1,2,4-triazole-3-carboxyamide as the substrates, the conversion rate of 1 was over 90 %.

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