Chondroitin lyase enzymes
First Claim
1. An isolated nucleic acid fragment having the sequence of Sequence ID No. 1 or naturally occurring sequences having conservative or degenerative substitutions thereof, encoding chondroitinase AC.
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Abstract
The present invention describes a method for the production of two highly purified enzymes capable of degrading chondroitin sulfate polysaccharides. A multi-step purification method incorporating cell disruption, cation exchange chromatography, affinity chromatography, hydroxylapatite chromatography, high resolution ion exchange chromatography and size exclusion is outlined. A 77,000±5,000 Dalton protein capable of degrading chondroitin sulfates A and C and a 55,000±2,300 Dalton protein capable of degrading dermatan sulfate were isolated. The genes encoding these enzymes, chondroitinase AC and chondroitinase B, respectively, have been cloned and methods for their use are described.
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6 Claims
- 1. An isolated nucleic acid fragment having the sequence of Sequence ID No. 1 or naturally occurring sequences having conservative or degenerative substitutions thereof, encoding chondroitinase AC.
- 4. An isolated nucleic acid fragment having the sequence of Sequence ID No. 3 or naturally occurring sequences having conservative or degenerative substitutions thereof, encoding chondroitinase B.
Specification