| Summary: | The data shown in this article are related to the published paper entitled “A novel 4-O-endosulfatase with high potential for the structure-function studies of chondroitin sulfate/dermatan sulfate” in Carbohydrate Polymers. In this article, the phylogenetic analysis, cloning, expression, purification, specificity and biochemical characteristics of the identified chondroitin sulfate/dermatan sulfate 4-O-endosulfatase (endoBI4SF) are described in detail. The recombinant endoBI4SF with a molecular mass of 59.13 kDa can can specifically hydrolyze the 4-O- but not 2-O- and 6-O-sulfate groups in the oligo-/polysaccharides of chondroitin sulfate/dermatan sulfate and show the maximum reaction rate in 50 mM Tris-HCl buffer (pH 7.0) at 50°C, which can be a very useful tool for the structural and functional studies of chondroitin sulfate/dermatan sulfate.
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