Enzymatic Sulfation of Chondroitin B

Enzymatic sulfation of chondroitin B.

Enzymatic sulfation of galactose residue of keratan sulfate by chondroitin 6-sulfotransferase.

We have previously found that the purified chondroitin 6-sulfotransferase (C6ST), which transfers sulfate from 3'-phosphoadenosine 5'-phosphosulfate (PAPS) to position 6 of N-acetylgalactosamine in chondroitin, catalyzed the sulfation of keratan sulfate, and that both the C6ST activity and the keratan sulfate sulfotransferase (KSST) activity were expressed in COS-7 cells when C6ST cDNA was tran...

Biosynthesis of chondroitin sulfate. Organization of sulfation.

The potential relationship of an intact membrane organization for the synthesis of chondroitin and chondroitin 4-sulfate was examined after modification of a mouse mast cell microsomal system with the nonionic detergent, Triton X-100. The results indicated that Triton X-100 had no effect on the rate of polymerization but had a slight effect on the size of glycosaminoglycan chains. An "all or no...

Enzymatic Sulfation of Mucopolysaccharides in Hen Oviduct

An enzymatic reaction has been identified in the isthmus of hen oviduct in which sulfate is transferred from 3’-phosphoadenosine 5’-phosphosulfate to mucopolysaccharide acceptors (1). From studies of the reaction with monosaccharides and oligosaccharides as model acceptors (‘2) it was concluded that one or more enzymes in the preparations employed catalyze a direct transfer of sulfate from PAPS...

The sulfation of chondroitin sulfate in embryonic chick cartilage epiphyses.

With the use of purified chondroitinase of Proteus vulgaris, a method has been devised for the determination of relative amounts of chondroitin, chondroitin-4-SO*, and chondroitin6-SO4 in cartilage. This method was applied to the analysis of embryonic chick epiphyseal cartilage. With 35S04 and ‘*C-acetate it was possible to study the relationship of embryo age to rate of formation of chondroiti...