title: Purification of chondroitinase B and chondroitinase C using glycosaminoglycan-bound AH-Sepharose 4B.
abstract: Chondroitinase B and chondroitinase C were separated from an extract of Flavobacterium heparinum induced with chondroitin 6-sulfate by using column chromatography on hydroxylapatite. Chondroitinase C was eluted together with the activities of hyaluronidase, delta4,5glycosiduronase, and sulfatase. The latter two activities were eliminated exclusively by passing the crude chondroitinase C fraction through a phosphono-cellulose column pre-equilibrated with 0.07M sodium phosphate buffer (pH 6.8). Chondroitinase C was then purified by affinity chromatography using dermatan sulfate-bound AH-Sepharose 4B coated with the same glycosaminoglycan. Purification of the enzyme was achieved 18-fold and in 73% yield. On the other hand, the activities of delta4,5glycosiduronase and sulfatase were decreased to 50 and 60%, respectively, as compared with those in the crude chondroitinase B fraction, after passing the fraction through a column of phosphono-cellulose pre-equilibrated with 0.1M sodium phosphate buffer (pH 6.8). The remaining activities of these two enzymes were then eliminated from chondroitinase B by affinity chromatography with heparin-bound AH-Sepharose 4B coated with dermatan sulfate. In the affinity chromatography used in the present study, non-covalent coating of the glycosaminoglycan-bound (covalently) AH-Sepharose 4B with the same or another glycosaminoglycan was found to be important.
mesh_terms: D002810:Chondroitinases and Chondroitin Lyases / Q000302:isolation & purification*; D002850:Chromatography, Gel; D003871:Dermatan Sulfate; D005417:Flavobacterium / Q000201:enzymology*; D006493:Heparin; D008722:Methods
chemical_list: D003871:Dermatan Sulfate; D006493:Heparin; D002810:Chondroitinases and Chondroitin Lyases