Chondroitin sulfate synthase 3 (Chsy3)

Has both beta-1,3-glucuronic acid and beta-1,4-N- acetylgalactosamine transferase activity. Transfers glucuronic acid (GlcUA) from UDP-GlcUA and N-acetylgalactosamine (GalNAc) from UDP-GalNAc into the non-reducing end of the elongating chondroitin polymer.

Specific activity is significantly reduced compared to CHSY1. .