Catalysis of the removal of a sugar or dicarbonyl from a glycated L-arginine, L-lysine or L-cysteine residue within proteins that have been attacked and modified by glyoxal or 2-oxopropanal.
protein demethylase activity +
protein disulfide isomerase activity
protein kinase activity +
protein lysine deacetylase activity +
protein lysine delactylase activity
protein methylesterase activity +
protein methylthiotransferase activity
protein methyltransferase activity +
protein N-acetylglucosaminyltransferase activity +
protein O-acetylglucosaminyltransferase activity +