D-Man-alpha-(1->3)-D-Glc-beta-(1->4)-D-Glc-alpha-1-diphosphoundecaprenol 2-beta-glucuronyltransferase (EC 2.4.1.264 GumK) is an enzyme with system name UDP-glucuronate:D-Man-alpha-(1->3)-D-Glc-beta-(1->4)-D-Glc-alpha-1-diphospho-ditransoctacis-undecaprenol beta-12-glucuronyltransferase.