Home  |  Contact

ENZYME entry: EC

Accepted Name
chondroitin AC lyase.
Alternative Name(s)
chondroitin AC eliminase.
chondroitin sulfate lyase.
Reaction catalysed
Eliminative degradation of polysaccharides containing 1,4-beta-D-hexosaminyl and 1,3-beta-D-glucuronosyl linkages to disaccharides containing 4-deoxy-beta-D-gluc-4-enuronosyl groups
  • Acts on chondroitin 4-sulfate and chondroitin 6-sulfate, but less well on hyaluronate.
  • In general, chondroitin sulfate (CS) and dermatan sulfate (DS) chains comprise a linkage region, a chain cap and a repeat region.
  • The repeat region of CS is a repeating disaccharide of glucuronic acid (GlcA) and N-acetylgalactosamine (GalNAc) [-4)GlcA(beta1- 3)GalNAc(beta1-]n, which may be O-sulfated on the C-4 and/or C-6 of GalNAc and C-2 of GlcA.
  • GlcA residues of CS may be epimerized to iduronic acid (IdoA) forming the repeating disaccharide [-4)IdoA(alpha1-3)GalNAc(beta1-]n of DS.
  • Both the concentrations and locations of sulfate-ester substituents vary with glucosaminoglycan source.
  • Formerly EC
PRIAM enzyme-specific profiles4.2.2.5
KEGG Ligand Database for Enzyme Nomenclature4.2.2.5
IUBMB Enzyme Nomenclature4.2.2.5
MEDLINEFind literature relating to
Rhea expert-curated reactions4.2.2.5

View entry in original ENZYME format
View entry in raw text format (no links)
All UniProtKB/Swiss-Prot entries referenced in this entry, with possibility to download in different formats, align etc.
All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 4.2.2.-
All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 4.2.-.-
All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 4.-.-.-