| 摘要 |
The present invention relates to a process for the modification of a glycoprotein, using a β-(1,4)-N-acetylgalactosaminyltransferase or a mutant thereof.The process comprisesthe step of contacting a glycoprotein comprising a glycan comprising a terminal GlcNAc-moiety, in the presence of a β-(1,4)-N-acetylgalactosaminyl- transferase or a mutant thereof, with anon-natural sugar-derivative nucleotide.The non-natural sugar-derivative nucleotideis according to formula (3), wherein A is selected from the group consisting of -N3; -C(0)R3; -C=C-R4; -SH; -SC(0)R8; -SC(V)OR8, wherein V is O or S; -X wherein X is selected from the group consisting of F, CI, Br and I; -OS(0)2R5; an optionally substituted C2 - C24 alkyl group; an optionally substituted terminal C2 - C24 alkenyl group; and an optionally substituted terminal C3 - C24 allenyl group. |
