葡萄柚中糖基转移酶对槲皮素及其类似物催化机制探讨
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  • 英文篇名:Probe on the Catalytic Mechanism of Glycosyltransferase in Grapefruit for Quercetin and Its Analogues
  • 作者:叶静斯 ; 窦文芳 ; 王程
  • 英文作者:YE Jing-si;DOU Wen-fang;WANG Cheng;School of Pharmaceutical Science,Jiangnan University;
  • 关键词:糖基化 ; 槲皮素 ; 槲皮素糖苷
  • 英文关键词:glycosylation;;quercetin;;quercetin glycoside
  • 中文刊名:SWJT
  • 英文刊名:Biotechnology Bulletin
  • 机构:江南大学药学院;
  • 出版日期:2019-07-26
  • 出版单位:生物技术通报
  • 年:2019
  • 期:v.35;No.324
  • 语种:中文;
  • 页:SWJT201907017
  • 页数:8
  • CN:07
  • ISSN:11-2396/Q
  • 分类号:126-133
摘要
研究了葡萄柚中糖基转移酶(FGT)作为催化酶,以UDP-葡萄糖、UDP-N-乙酰-D-氨基葡萄糖、UDP-甘露糖为糖基供体,槲皮素、柚皮素、柚皮苷为糖基受体,研究糖基化合成情况。通过高效液相、质谱及核磁共振氢谱对产物反应进行检测。确定了槲皮素与UDP-葡萄糖、UDP-N-乙酰-D-氨基葡萄糖可以发生糖基化反应,生成的槲皮素糖苷分子量分别为464、505。根据核磁结果鉴定,所得到的产物结构分别为槲皮素-3-O-β-D葡萄糖苷、槲皮素3-O-β-D-N-乙酰-D-氨基葡萄糖苷。以FGT酶为催化酶,对槲皮素进行了糖基化修饰。
        Using Glycosyltransferase(FGT)in grapefruit as catalytic enzyme,UDP-glucose,UDP-N-acetyl-D-glucosamine,and UDP-mannose as glycosyl donor,quercetin and naringin as glycosylation receptor,glycosylation was studied. The reaction of the product was detected by high performance liquid chromatography,mass spectrometry and nuclear magnetic resonance(NMR)hydrogen spectrum.The glycosylation reaction of quercetin with UDP-glucose and UDP-N-acetyl-D-glucosamine was confirmed. The molecular weight of quercetin glycoside was 464 and 505,respectively. According to the results of nuclear magnetic resonance,the structures of the products were quercetin-3-O-beta-D glucoside and quercetin-3-O-beta-D-N-acetyl-D-glucosamine. It was verified that FGT enzyme was used to modify quercetin glycosylation.
引文
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