Arylsulfatase G is a subfamily of sulfatases which specifically hydrolyze sulfate esters in a wide variety of substrates such as glycosaminoglycans, steroid sulfates, or sulfolipids. ARSG has arylsulfatase activity toward different pseudosubstrates like p-nitrocatechol sulfate and 4-methylumbelliferyl sulfate. An active site Cys is post-translationally converted to the critical active site C(alpha)-formylglycine. ARSG mRNA expression was found to be tissue-specific with highest expression in liver, kidney, and pancreas, suggesting a metabolic role of ARSG that might be associated with a non-classified lysosomal storage disorder.
Jiyao W et al.(2023). "The conserved domain database in 2023.",