Patent ID: 11046988

Abstract:
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 comprises the step of contacting a glycoprotein comprising a glycan comprising a terminal GlcNAc-moiety, in the presence of a β-(1,4)-N-acetylgalactosaminyltransferase 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(O)R3; —C═C—R4; —SH; —SC(O)R8; —SC(V)OR8, wherein V is O or S; —X wherein X is selected from the group consisting of F, Cl, Br and I; —OS(O)2R5; an optionally substituted C2-C24 alkyl group; an optionally substituted terminal C2-C24 alkenyl group; and an optionally substituted terminal C3-C24 alkenyl group.