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  • Title: Occurrence of ceramide-glycanase in the earthworm, Lumbricus terrestris.
    Author: Li YT, Ishikawa Y, Li SC.
    Journal: Biochem Biophys Res Commun; 1987 Nov 30; 149(1):167-72. PubMed ID: 3689409.
    Abstract:
    We have detected the presence of ceramide-glycanase in the earthworm, Lumbricus terrestris. We have also devised a simple method for the preparation of this enzyme from the earthworm. This enzyme cleaved the linkage between the ceramide and the glycan chain in LacCer, GbOse3Cer, GbOse4Cer, GbOse5Cer, GM3, GM2, GM1 and GD1a. By using tritium-labeled GM2 as substrate, the optimum pH of this enzyme was found to be between pH 4 and 4.5. In the earthworm, the ceramide-glycanase was mainly found in the muscle. The intestine was found to contain a very low level of this enzyme. Because of their easy availability, earthworms should become a convenient source for the preparation of ceramide-glycanase.
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