CHST5 Antibody – Goat Polyclonal

CHST6: Sulfotransferase that utilizes 3'-phospho-5'-adenylyl sulfate (PAPS) as sulfonate donor to catalyze the transfer of sulfate to position 6 of non-reducing N-acetylglucosamine (GlcNAc) residues of keratan. Mediates sulfation of keratan in cornea. Keratan sulfate plays a central role in maintaining corneal transparency. Acts on the non-reducing terminal GlcNAc of short and long carbohydrate substrates that have poly-N- acetyllactosamine structures. Defects in CHST6 are the cause of macular corneal dystrophy (MCD). MCD is an autosomal recessive disease characterized by corneal opacities. Onset occurs in the first decade, usually between ages 5 and 9. The disorder is progressive. Minute, gray, punctate opacities develop. Corneal sensitivity is usually reduced. Painful attacks with photophobia, foreign body sensations, and recurrent erosions occur in most patients. There are different types of MCD: MCD type I, in which there is a virtual absence of sulfated keratan sulfate (KS) in the serum and cornea, as determined by KS-specific antibodies; and MCD type II, in which the normal sulfated KS-antibody response is present in cornea and serum. MCD type I patients usually have a homozygous missense mutation, while MCD type II patients show a large deletion and replacement in the upstream region of CHST6. The only missense mutation for type II is Cys-50, which is heterozygous with a replacement in the upstream region on the other allele of CHST6. Belongs to the sulfotransferase 1 family. Gal/GlcNAc/GalNAc subfamily.

Protein type: Transferase; Membrane protein, integral; Glycan Metabolism - keratan sulfate biosynthesis; EC 2.8.2.-

Cellular Component: Golgi apparatus; Golgi membrane; integral to membrane; membrane

Molecular Function: 1-phenanthrol sulfotransferase activity; 2-phenanthrol sulfotransferase activity; 3-phenanthrol sulfotransferase activity; 4-phenanthrol sulfotransferase activity; 9-phenanthrol sulfotransferase activity; cholesterol sulfotransferase activity; galactose 3-O-sulfotransferase activity; heparan sulfate 2-O-sulfotransferase activity; heparan sulfate 6-O-sulfotransferase activity; HNK-1 sulfotransferase activity; N-acetylgalactosamine 4-O-sulfotransferase activity; N-acetylglucosamine 6-O-sulfotransferase activity; phenanthrol sulfotransferase activity; proteoglycan sulfotransferase activity; sulfotransferase activity; trans-3,4-dihydrodiolphenanthrene sulfotransferase activity; trans-9R,10R-dihydrodiolphenanthrene sulfotransferase activity; transferase activity

Biological Process: carbohydrate metabolic process; keratan sulfate biosynthetic process; N-acetylglucosamine metabolic process; sulfur metabolic process