Cellulases are synthesized in nature by a number fungi and bacteria, although fungal cellulases have received the most attention for research. Some fungal species, most notabl…y Trichoderma , e.g. T. reesei, produce cellulases capable of degrading at least in part, crystalline regions of native cellulose. Cellulolytic enzymes produced by fungi can be classified as one of three types:.
Endocellulases - catalyse random cleavage of internal bonds of the cellulose chain..
Cellobiohydrolase or exoglucanases - attack the chain ends releasing cellobiose(the smallest repetitive unit of cellulose).
Î-glucosidases - Are only active on cello-oligosaccharides and cellobiose, and release glucose monomers from cellobiose..
( Cellulolytic bacteria mainly produce endocellulases). (MORE)