Glycosyltransferase activity can be selectively modulated by chemical modifications of acceptor substrates
摘要:
A range of N-acetyllactosamine derivatives, which are modified by a wide range of functionalities at C-2' and C-6, have been synthesised and the kinetic parameters of transfer catalysed by recombinant alpha-2,6-sialyltransferase and alpha-1,3-fucoyltransferase VI determined. Several of the chemical modifications led to selective modulate the activity the enzymes and offer promising lead compounds for the development of oligosaccharide primers for selective metabolic inhibition of oligosaccharide biosynthesis. (C) 2004 Elsevier Ltd. All rights reserved.
Glycosyltransferase activity can be selectively modulated by chemical modifications of acceptor substrates
摘要:
A range of N-acetyllactosamine derivatives, which are modified by a wide range of functionalities at C-2' and C-6, have been synthesised and the kinetic parameters of transfer catalysed by recombinant alpha-2,6-sialyltransferase and alpha-1,3-fucoyltransferase VI determined. Several of the chemical modifications led to selective modulate the activity the enzymes and offer promising lead compounds for the development of oligosaccharide primers for selective metabolic inhibition of oligosaccharide biosynthesis. (C) 2004 Elsevier Ltd. All rights reserved.
Novel aspects of interaction between UDP-Gal and GlcNAc β-1,4-Galactosyltransferase: Transferability and remarkable inhibitory activity of UDP-(mono-O-methylated Gal), UDP-Fuc and UDP-Man
Four mono-O-methylated and one mono-O-acetylated UDP-D-Gal analogues and UDP-L-Fuc were synthesized. 2-O-Methyl-D-galactose residue was enzymatically transferred to give 2'-O-methyIlactosaminide in high yield. UDP-Fuc and UDP-Man showed potent inhibitory activities against beta-1,4-galactosyltransferase. Structural requirement and steric allowance for the ground and transition states of the enzyme reaction were discussed. Copyright (C) 1996 Elsevier Science Ltd