Table 5.

Conserved peptide motifs in glycosyltransferases.

	Peptide motif	Reference
Many GTs	DxD	(60)
Beta4-Gal-transferases	DxD, GWGxED	(60, 61)
Beta3-Gal-transferases	DxD, 2 motifs	(61)
Fuc-transferases	2-Fuc motif	(60, 62, 63)
	Two 3-Fuc motifs	(60, 62, 63)
	6-Fuc motif	(60, 62, 63)
	Three 2/6-Fuc motifs	(60, 63, 64)
	HxRRxD
Beta3-GlcNAc-transferases	DxD, 2 motifs	(61)
C2GnT	SPDE	(20, 21)
Sialyltransferases, mammalian	Sialyl-motif L	(65)
	Sialyl-motif S	(65)
	Sialyl-motif VS	(65)
	Sialyl-motif III	(65)
Sialyltransferases, bacterial	D(E)-D(E)-G	(66)
	HP
Polysialyltransferases, mammalian	PSTD motif	(67)
Polypeptide GalNAc-transferases	Ricin-like lectin domain
ABO transferases	DxD	(60)