| Type: | Active_site | Name: | Glycoside hydrolase, family 9, active site |
| Description: | O-Glycosyl hydrolases () 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 [, ]. This classification is available on the CAZy (CArbohydrate-Active EnZymes) web site.Glycoside hydrolase family 9 comprises enzymes with several known activities; endoglucanase (); cellobiohydrolase (). These enzymes were formerly known as cellulase family E. This entry contains two patterns that are centred on conserved residues which have been shown [, ], in the endoglucanase D from Cellulomonas thermocellum, to be important for the catalytic activity. The first region contains an active site histidine and the second region contains two catalytically important residues: an aspartate and a glutamate. | Short Name: | Glyco_hydro_9_AS |
