Polysaccharide Epimerases
Polysaccharide epimerases such as D-glucuronyl C5-epimerase (HSEPI) and chondroitin-glucuronate C5-epimerase (DSEPI) catalyze the epimerization of D-glucuronic acid (GlcA) in the polysaccharide to its C5-epimer L-iduronic acid (IdoA)