glucosamine (N-acetyl)-6-sulfatase(G6S, GNS) AND sulfatase 1(SULF1)
N-acetylglucosamine-6-sulfatase also known as glucosamine (N-acetyl)-6-sulfatase hydrolyzes of the 6-sulfate groups of the N-acetyl-D-glucosamine 6-sulfate units of heparan sulfate and keratan sulfate. Deficient of N-acetylglucosamine-6-sulfatase results in disease of Sanfilippo Syndrome type IIId or Mucopolysaccharidosis III (MPS-III), a rare autosomal recessive lysosomal storage disease. SULF1 encodes an extracellular heparan sulfate endosulfatase, that removes 6-O-sulfate groups from heparan sulfate chains of heparan sulfate proteoglycans (HSPGs).
Jiyao W et al.(2023). "The conserved domain database in 2023.",