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Information on EC 3.2.1.176 - cellulose 1,4-beta-cellobiosidase (reducing end)

for references in articles please use BRENDA:EC3.2.1.176
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IUBMB Comments
Some exocellulases, most of which belong to the glycoside hydrolase family 48 (GH48, formerly known as cellulase family L), act at the reducing ends of cellulose and similar substrates. The CelS enzyme from Clostridium thermocellum is the most abundant subunit of the cellulosome formed by the organism. It liberates cellobiose units from the reducing end by hydrolysis of the glycosidic bond, employing an inverting reaction mechanism . Different from EC 3.2.1.91, which attacks cellulose from the non-reducing end.
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The expected taxonomic range for this enzyme is: Eukaryota, Bacteria
Reaction Schemes
Hydrolysis of (1->4)-beta-D-glucosidic linkages in cellulose and similar substrates, releasing cellobiose from the reducing ends of the chains.
Synonyms
1,4-beta-D-glucan cellobiohydrolase I, 1,4-beta-D-glucan-cellobiohydrolase I, CBH, CBH I, CBH Ib, CBH-1, CBH1, CBH2, Cbh3, Cbh7B, more
REACTION
REACTION DIAGRAM
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ORGANISM
UNIPROT
LITERATURE
Hydrolysis of (1->4)-beta-D-glucosidic linkages in cellulose and cellotetraose, releasing cellobiose from the non-reducing ends of the chains
show the reaction diagram
Hydrolysis of (1->4)-beta-D-glucosidic linkages in cellulose and similar substrates, releasing cellobiose from the reducing ends of the chains.
show the reaction diagram
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PATHWAY SOURCE
PATHWAYS