The glycosyltransferase family 28 includes monogalactosyldiacylglycerol synthase (Swiss:P93115, EC 2.4.1.46) and UDP-N-acetylglucosamine transferase (Swiss:P74657, EC 2.4.1.-). This N-terminal domain contains the acceptor binding site and likely membrane association site. This family also contains a large number of proteins that probably have quite distinct activities.

1: The murG gene of Escherichia coli codes for the UDP-N-acetylglucosamine: N-acetylmuramyl-(pentapeptide) pyrophosphoryl-undecaprenol N-acetylglucosamine transferase involved in the membrane steps of peptidoglycan synthesis. Mengin-Lecreulx D, Texier L, Rousseau M, van Heijenoort J; J Bacteriol 1991;173:4625-4636. PMID:1649817