The present invention provides for novel fucosidase mutants that server as fuco-ligases for core fucosylation of a range of biological glycopeptides and glycoproteins including intact therapeutic antibodies. Several mutants with mutation at the general acid/base residue E274 of the Lactobacillus casei α1,6-fucosidase, including E274A, E274S, and E274G, were able to efficiently fucosylate a wide variety of complex N-glycopeptides and intact glycoproteins. The site specific mutants enable the transfer of fucose to a core GlcNAc-Asn residue and useful for drug delivery and vaccine development.
                            本发明提供了新型岩藻糖苷酶突变体,这些突变体可作为岩藻连接酶用于一系列
生物糖肽和糖蛋白(包括完整的治疗性
抗体)的核心岩藻糖基化。
乳酸杆菌α1,6-岩藻糖苷酶的一般酸/碱残基 E274 发生突变的几种突变体(包括 E274A、E274S 和 E274G)能够有效地对各种复杂的 N-糖肽和完整的糖蛋白进行岩藻糖基化。这些位点特异性突变体能将岩藻糖转移到核心 GlcNAc-Asn 残基上,有助于药物输送和疫苗开发。