Transferase Activity of a β-Glycosidase fromThermus thermophilus: Specificities and Limits – Application to the Synthesis of β-[1→3]-Disaccharides
作者:Violaine Chiffoleau-Giraud、Petra Spangenberg、Michel Dion、Claude Rabiller
DOI:10.1002/(sici)1099-0690(199904)1999:4<757::aid-ejoc757>3.0.co;2-3
日期:1999.4
reactions is mainly of the β-[13] type, good yields are obtained for the synthesis of 2-nitrophenyl-β-D-galactopyranosyl-[13]-β-D-galactopyranoside and 2-nitrophenyl-β-D-glucopyranosyl-[13]-β-D-glucopyranoside. Conversely, in the presence of p-nitrophenylfucoside, the autocondensation is very limited, and with methyl-α-D-galactoside as an acceptor, the regioselectivity is mainly of the β-[16]-type resulting
本文的目的是测试嗜热栖热菌的 β-糖苷酶在硝基苯基糖苷作为供体和其他单糖作为受体的情况下催化转糖基化反应的能力。我们的结果表明,该酶能够与硝基苯基半乳糖苷、β-葡萄糖苷和β-岩藻糖苷一起诱导此类反应。对于前两个供体,供体的自动缩合(因此也充当受体)比与其他受体的转糖基化作用更快。此外,由于反应的区域选择性主要是 β-[13] 型,因此合成 2-硝基苯基-β-D-吡喃半乳糖基-[13]-β-D-吡喃半乳糖苷和 2-硝基苯基-β-D-吡喃葡萄糖苷-[13]-β-D-吡喃葡萄糖苷。相反,在对硝基苯基岩藻糖苷存在下,