2.4.2.42	additional information	the enzyme is appears to be involved in the biosynthesis of the Xylalpha(1-3)Glcbeta-Ser structure of glycoproteins such as human blood coagulation factors VII and IX	
2.4.2.42	UDP-D-xylose + Glcbeta-Ser53-EGF-like domain of bovine factor IX(45-87)	the enzyme is involved in the biosynthesis of the Xylalpha(1-3)Xylalpha(1-3)Glcbeta-1-O-Ser on epidermal growth factor-like domains