2.4.1.135 crystal structure in presence of the donor substrate UDP-glucuronic acid 2.4.1.135 crystal structure of the enzyme at 2.3 A in the presence of the UDP, Mn2+ and Galbeta(1-3)Galbeta(1-4)Xyl 2.4.1.135 the X-ray crystal structure reveals that GlcAT1 is a globular protein with two subdomains 2.4.1.135 vapor diffusion hanging drop method, crystal structure of the enzyme in the presence of UDP and Galbeta(1-3)Gal(6-O-sufate)beta(1-4)Xyl(2-O-phosphate)beta1-O-Ser