Chondroitin sulfate ABC endolyase

In enzymology, a chondroitin-sulfate-ABC endolyase (EC 4.2.2.20) is an enzyme that catalyzes the chemical reaction

Endolytic cleavage of beta-1,4-galactosaminic bonds between N-acetylgalactosamine and either D-glucuronic acid or L-iduronic acid to produce a mixture of Delta₄-unsaturated oligosaccharides of different sizes that are ultimately degraded to Delta₄-unsaturated tetra- and disaccharides

This enzyme belongs to the family of lyases, specifically those carbon-oxygen lyases acting on polysaccharides. The systematic name of this enzyme class is chondroitin-sulfate-ABC endolyase. Other names in common use include chondroitinase (ambiguous), chondroitin ABC eliminase (ambiguous), chondroitinase ABC (ambiguous), chondroitin ABC lyase (ambiguous), chondroitin sulfate ABC lyase (ambiguous), ChS ABC lyase (ambiguous), chondroitin sulfate ABC endoeliminase, chondroitin sulfate ABC endolyase, and ChS ABC lyase I.