Endoglucanase G

Endoglucanase G is an enzyme (EC 3.2.1.4) classified as a glycoside hydrolase, primarily responsible for catalyzing the hydrolysis of internal β-1,4-glycosidic bonds found in cellulose, the major structural polysaccharide in plant cell walls[1][3][5]. This enzyme is widely distributed in fungi, bacteria, protozoans, and plants, where it plays central roles in biomass degradation, nutrient cycling, and sometimes plant development[1][3][5][6][8]. Industrially, endoglucanases (including Endoglucanase G) are crucial for the conversion of plant biomass into fermentable sugars for biofuel production, paper processing, textile manufacture, and animal feed improvement[3][5]. Structurally, endoglucanases often contain a catalytic domain and, depending on family and organism, one or more binding domains (such as carbohydrate-binding modules)[1][2][3][5][8]. Unlike exoglucanases, which act at the ends of cellulose chains, endoglucanases cleave internal bonds, producing shorter cellulose fragments for further processing[1][3][4]. Endoglucanase G, like other endoglucanases, is not a target for therapeutic drug development but is extensively engineered in biotechnology to improve efficiency and stability under industrial conditions[5].

Other names

Endo-1,4-β-glucanaseEGCelG1,4-β-D-glucan 4-glucanohydrolaseBeta-1,4-endoglucanaseCellulase (subclass or activity type)

Hydrolysis of β-1,4-glycosidic bonds within polysaccharide chains, especially cellulose.