Tags: Enzyme.
In enzymology a glycoprotein-N-acetylgalactosamine 3-beta-galactosyltransferase (EC 2.4.1.122) is an enzyme that catalyzes the chemical reactionUDP-galactose + glycoprotein N-acetyl-D-galactosamine UDP + glycoprotein D-galactosyl-13-N-acetyl-D-galactosamineThus the two substrates of this enzyme are UDP-galactose and glycoprotein N-acetyl-D-galactosamine whereas its two products are UDP and glycoprotein D-galactosyl-13-N-acetyl-D-galactosamine.This enzyme belongs to the family of glycosyltransferases specifically the hexosyltransferases.