3.1.6.4	6-sulfatase, acetylgalactosamine 6-sulfatase, AtsA2, chondroitin sulfatase, chondroitinase, chondroitinsulfatase, galactose-6-sulfatase, galactose-6-sulfate sulfatase, GalNAc6S sulfatase, GALNS, N-acetylgalactosamine 6-sulfatase, N-acetylgalactosamine 6-sulphate sulphatase, N-acetylgalactosamine-6-sulfatase, N-acetylgalactosamine-6-sulfate sulfatase, sulfatase, acetylgalactosamine 6-, sulfatase, chondroitin