Predicted to enable galactosylgalactosylxylosylprotein 3-beta-glucuronosyltransferase activity and protein phosphatase activator activity. Predicted to be involved in several processes, including chondroitin sulfate proteoglycan biosynthetic process; glycosaminoglycan biosynthetic process; and positive regulation of intracellular protein transport. Predicted to act upstream of or within dermatan sulfate proteoglycan biosynthetic process and heparan sulfate proteoglycan biosynthetic process. Predicted to be located in cis-Golgi network. Predicted to be active in Golgi membrane. Is expressed in several structures, including cranium; genitourinary system; integumental system; nervous system; and sensory organ. Human ortholog(s) of this gene implicated in Larsen-like syndrome B3GAT3 type. Orthologous to human B3GAT3 (beta-1,3-glucuronyltransferase 3). [provided by Alliance of Genome Resources, Apr 2022]