A versatile glycosynthase (TnG-E338A) with strikingly broadsubstrate scope has been developed from Thermus nonproteolyticus β-glycosidase (TnG) by using site-directed mutagenesis. The practical utility of this biocatalyst has been demonstrated by the facile generation of a small library containing various oligosaccharides and a steroidal glycoside (total 25 compounds) in up to 100 % isolated yield
Designer α1,6-Fucosidase Mutants Enable Direct Core Fucosylation of Intact N-Glycopeptides and N-Glycoproteins
作者:Chao Li、Shilei Zhu、Christopher Ma、Lai-Xi Wang
DOI:10.1021/jacs.7b07906
日期:2017.10.25
and generation of potential α1,6-fucosynthase and fucoligase for direct core fucosylation of intact N-glycoproteins. We found that mutation at the nucleophilic residue (D200) did not provide a typical glycosynthase from this bacterial enzyme, but several mutants with mutation at the general acid/base residue E274 of the Lactobacillus casei α1,6-fucosidase, including E274A, E274S, and E274G, acted as
Purification of α-l-fucosidase by C-glycosylic affinity chromatography, and the enzymic synthesis of α-l-fucosyl disaccharides
作者:Stefan C.T. Svensson、Joachim Thiem
DOI:10.1016/0008-6215(90)84205-9
日期:1990.4
An alpha-L-fucosidase from porcine liver was purified using the new C-glycosylicaffinity adsorbent, Sepharose-epsilon-aminocaproyl-3-(alpha-L-fucopyranosyl)propylamine. The C-fucosylic linkage was synthesized by a radical reaction of 2,3,4-tri-O-acetyl-alpha-L-fucopyranosyl bromide with acrylonitrile. In transglycosylation reactions with p-nitrophenyl alpha-L-fucopyranoside or alpha-L-fucopyranosyl
Comparative studies on the substrate specificity and defucosylation activity of three α-l-fucosidases using synthetic fucosylated glycopeptides and glycoproteins as substrates
作者:Sunaina Kiran Prabhu、Chao Li、Guanghui Zong、Roushu Zhang、Lai-Xi Wang
DOI:10.1016/j.bmc.2021.116243
日期:2021.7
capable of removing core fucose from intact glycoproteins. This paper describes a comparative study of the substrate specificity and relative activity of the human α-l-fucosidase (FucA1) and two bacterial α-l-fucosidases, the AlfC from Lactobacillus casei and the BfFuc from Bacteroides fragilis. This study was enabled by the synthesis of an array of structurally well-defined core-fucosylated substrates
Verfahren zur Herstellung von Glycosiden mit Glycosidasen aus Ciliaten
申请人:HOECHST AKTIENGESELLSCHAFT
公开号:EP0725144A1
公开(公告)日:1996-08-07
Die Erfindung betrifft ein Verfahren zur Herstellung von Glycosiden durch enzymatische Glycosylierung mittels α- und β-Glycosidasen aus holotrichen Ciliaten und im besonderen aus Hymenostomatida.
Glycosidasen aus holotrichen Ciliaten eignen sich sehr gut zur enzymatischen Synthese von Alkylglycosiden, Glycopeptiden, Di- bzw. Oligosacchariden. Bevorzugte Glycosyldoren sind Nitrophenylglycoside, Glycosylfluoride oder Disaccharide, bevorzugte Akzeptoren sind kurzkettige Alkohole, Polyhydroxyverbindungen, insbesondere Monosaccharide, oder geschützte Hydroxyaminosäuren oder entsprechende Peptide.