In molecular biology, glycoside hydrolase family 8 is a family of glycoside hydrolases , which 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 glycoside hydrolases, based on sequence similarity, has led to the definition of >100 different families. This classification is available on the CAZy website, and also discussed at CAZypedia, an online encyclopedia of carbohydrate-active enzymes.
Glycoside hydrolase family 8 CAZY GH_8 comprises enzymes with several known activities; endoglucanase (); lichenase (); chitosanase (). These enzymes were formerly known as cellulase family D.