Keratan-sulfate endo-1,4-beta-galactosidase

Keratan-sulfate endo-1,4-β-galactosidase (, endo-β-galactosidase, keratan sulfate endogalactosidase, keratanase, keratan-sulfate 1,4-β- D -galactanohydrolase) is an enzyme with systematic name keratan-sulfate 4-β- D -galactanohydrolase. It catalyses endohydrolysis of (1→4)-β- D -galactosidic linkages in keratan sulfate.

It hydrolyses the 1,4-β- D -galactosyl linkages adjacent to 1,3-N-acetyl-α- D -glucosaminyl residues.