Plays an important role in the degradation of dermatan and keratan sulfates. a beta-D-glucuronoside + H2O = an alcohol + D-glucuronate Inhibited by L-aspartic acid. Homotetramer. Undergoes a post-transcriptional proteolytic cleavage near its C-terminal end, which reduces its size by approximately 3 kDa. The site of this cleavage has as yet not been determined. Belongs to the glycosyl hydrolase 2 family.