In molecular biology, glycoside hydrolase family 73 is a family of glycoside hydrolases.
Glycoside 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 glycoside hydrolases, based on sequence similarity, has led to the definition of >100 different families. This classification is available on the CAZy web site, and also discussed at CAZypedia, an online encyclopedia of carbohydrate active enzymes.
Glycoside hydrolase family 73 CAZY GH_73 includes peptidoglycan hydrolases with endo-ò-N-acetylglucosaminidase specificity. Members of this family include mannosyl-glycoprotein endo-beta-N-acetylglucosamidase and flagellar protein J (flgJ), which has been shown to hydrolyse peptidoglycan.