InterPro domain: IPR000490

O-Glycosyl hydrolases ( 3.2.1. ) are a widespread group of enzymes that hydrolyse the glycosidic bond between two or more carbohydrates, or between a carbohydrate and a non-carbohydrate moiety. A classification system for glycosyl hydrolases, based on sequence similarity, has led to the definition of 85 different families [ 1 , 2 ]. This classification is available on the CAZy (CArbohydrate-Active EnZymes) website.

Glycoside hydrolase family 17 GH17 comprises enzymes with several known activities; endo-1,3-beta-glucosidase ( 3.2.1.39 ); lichenase ( 3.2.1.73 ); exo-1,3-glucanase ( 3.2.1.58 ). Currently these enzymes have only been found in plants and in fungi.

1. Conserved catalytic machinery and the prediction of a common fold for several families of glycosyl hydrolases. Proc. Natl. Acad. Sci. U.S.A. 92, 7090-4
2. Structures and mechanisms of glycosyl hydrolases. Structure 3, 853-9