Characterization of Recombinant Sucrose Synthase 1 from Potato for the Synthesis of Sucrose Analogues
作者:Ulrike Römer、Nadja Nettelstroth、Walter Köckenberger、Lothar Elling
DOI:10.1002/1615-4169(200108)343:6/7<655::aid-adsc655>3.0.co;2-a
日期:2001.8
The characteristics and the application of recombinant sucrose synthase 1 (SuSy1) from potato for the synthesis of sucrose analogues are described. With UDP-Glc as donor substrate SuSy1 accepts a variety of ketoses, e.g., 1-deoxy-1-fluoro-D-fructose (6; 100%), L-sorbose (7, 55%), and D-xylulose (8; 42%), as well as aldoses, e.g., D-talose (15; 36%), D-idose (16; 24%), D-lyxose (12; 48%), L-arabinose
介绍了马铃薯重组蔗糖合酶1(SuSy1)在合成蔗糖类似物方面的特点和应用。使用 UDP-Glc 作为供体底物 SuSy1 接受多种酮糖,例如 1-脱氧-1-氟-D-果糖 (6; 100%)、L-山梨糖 (7, 55%) 和 D-木酮糖 (8 ; 42%),以及醛糖,例如 D-塔罗糖 (15; 36%)、D-艾杜糖 (16; 24%)、D-来苏糖 (12; 48%)、L-阿拉伯糖 (13; 36%) ) 和 D-核糖 (14; 7%)。动力学分析显示非天然受体 6 (kcat/Km = 3.5 s -1 mM -1)、7 (kcat/Km = 1⋅10 -2 s -1 mM -1)、8 (kcat/Km = 2 ⋅10 -2 s -1 mM -1) 和 12 (kcat/Km = 2⋅10 -2 s -1 mM -1) 与 D-果糖 (5; kcat/Km = 34.1 s) 相比是相对较差的底物-1