basic FUNCTION
| transfering sulfate to the C-4 hydroxyl of beta1,4-linked GalNAc that is substituted with an alpha-linked iduronic acid (IdoUA) at the C-3 hydroxyl |
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having specificity with predominant preference for IdoUA-GalNAc flanked by GlcUA-GalNAc over IdoUA-GalNAc flanked by IdoUA-GalNAc in exhaustively desulfated dermatan (Mikami 2003) |
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role in development and extracellular-matrix maintenance (Dundar 2009) |
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transfers active sulfate from 3'-phosphoadenosine 5'-phosphosulfate to position 4 of the N-acetyl-D-galactosamine (GalNAc) residues of dermatan sulfate (DS) |