Patent ID: 7220555
Filing Date: 2007-05-22
Classification: C12N,C12P

Abstract:
1. A method of sialylating a saccharide group on a recombinant glycoprotein, the method comprising contacting a saccharide group which comprises a galactose or an N-acetylgalactosamine acceptor moiety on a recombinant glycoprotein with a sialic acid donor moiety and a Campylobacter jejuni α2,3-sialyltransferase in a reaction mixture which provides reactants required for sialyltransferase activity for a sufficient time and under appropriate conditions to transfer sialic acid from said sialic acid donor moiety to said saccharide group, wherein the concentration of sialyltransferase is at least 2 mUnit/mg of glycoprotein acceptor.