ID   3.2.1.176
DE   cellulose 1,4-beta-cellobiosidase (reducing end).
AN   cellulase SS.
AN   endoglucanase SS.
CA   Hydrolysis of (1->4)-beta-D-glucosidic linkages in cellulose and similar
CA   substrates, releasing cellobiose from the reducing ends of the chains.
CC   -!- Some exocellulases, most of which belong to the glycoside hydrolase
CC       family 48 (GH48), act at the reducing ends of cellulose and similar
CC       substrates.
CC   -!- The CelS enzyme from Clostridium thermocellum is the most abundant
CC       subunit of the cellulosome formed by the organism.
CC   -!- It liberates cellobiose units from the reducing end by hydrolysis of
CC       the glycosidic bond, employing an inverting reaction mechanism.
CC   -!- Different from EC 3.2.1.91, which attacks cellulose from the non-
CC       reducing end.
DR   A3DH67, GUNS_ACET2 ;  P0C2S5, GUNS_ACETH ;
//