Transfers glucuronic acid (GlcUA) from UDP-GlcUA to N-acetylgalactosamine residues on the non-reducing end of the elongating chondroitin polymer. Has no N-acetylgalactosaminyltransferase activity.
Subcellular locations: Golgi apparatus, Golgi stack membrane
Ubiquitous. Highly expressed in placenta, small intestine and pancreas.