Cellulose 1,4-beta-cellobiosidase

Cellulose 1,4-beta-cellobiosidase (non-reducing end) (EC 3.2.1.91, exo-cellobiohydrolase, beta-1,4-glucan cellobiohydrolase, beta-1,4-glucan cellobiosylhydrolase, 1,4-beta-glucan cellobiosidase, exoglucanase, avicelase, CBH 1, C1 cellulase, cellobiohydrolase I, cellobiohydrolase, exo-beta-1,4-glucan cellobiohydrolase, 1,4-beta-D-glucan cellobiohydrolase, cellobiosidase) is an enzyme with systematic name 4-beta-D-glucan cellobiohydrolase (non-reducing end).^[1]^[2]^[3]^[4] This enzyme catalyses the following chemical reaction

Hydrolysis of (1->4)-beta-D-glucosidic linkages in cellulose and cellotetraose, releasing [cellobiose] from the non-reducing ends of the chains

References

↑ Berghem, L.E.R. and Pettersson, L.G. (1973). "The mechanism of enzymatic cellulose degradation. Purification of a cellulolytic enzyme from Trichoderma viride active on highly ordered cellulose". Eur. J. Biochem. 37: 21–30. doi:10.1111/j.1432-1033.1973.tb02952.x. PMID 4738092.
↑ Eriksson, K.E. and Pettersson, B. (1975). "Extracellular enzyme system utilized by the fungus Sporotrichum pulverulentum (Chrysosporium lignorum) for the breakdown of cellulose. 3. Purification and physico-chemical characterization of an exo-1,4-β-glucanase". Eur. J. Biochem. 51: 213–218. doi:10.1111/j.1432-1033.1975.tb03921.x. PMID 235428.
↑ Halliwell, G., Griffin, M. and Vincent, R. (1972). "The role of component C₁ in cellulolytic systems". Biochem. J. 127: 43P–43P. PMID 5076675.
↑ Zverlov V., Velikodvorskaya G., Schwarz W., Bronnenmeier K., Kellermann J., Staudenbauer W. (1998) Multidomain structure and cellulosomal localization of the Clostridium thermocellum cellobiohydrolase CbhA. J. Bacteriol. 180, 3091-3099.

External links

Cellulose 1,4-beta-cellobiosidase (non-reducing end) at the US National Library of Medicine Medical Subject Headings (MeSH)

Hydrolase: sugar hydrolases (EC 3.2)

3.2.1: Glycoside hydrolases

Disaccharidase	Sucrase/Sucrase-isomaltase/Invertase Maltase Trehalase Lactase

Glucosidases	Cellulase Alpha-glucosidase Acid Neutral AB Neutral C Beta-glucosidase cytosolic Debranching enzyme

Other	Amylase Alpha-amylase Chitinase Lysozyme Neuraminidase NEU1 NEU2 NEU3 NEU4 Bacterial neuraminidase Viral neuraminidase Galactosidases Alpha Beta alpha-Mannosidase Glucuronidase Hyaluronidase Pullulanase Glucosylceramidase lysosomal non-lysosomal Galactosylceramidase Alpha-N-acetylgalactosaminidase NAGA Alpha-N-acetylglucosaminidase Fucosidase Hexosaminidase HEXA HEXB Iduronidase Maltase-glucoamylase Heparanase HPSE2

3.2.2: Hydrolysing
N-Glycosyl compounds

DNA glycosylases: Oxoguanine glycosylase

Enzymes

Activity	Active site Binding site Catalytic triad Oxyanion hole Enzyme promiscuity Catalytically perfect enzyme Coenzyme Cofactor Enzyme catalysis Enzyme kinetics Lineweaver–Burk plot Michaelis–Menten kinetics

Regulation	Allosteric regulation Cooperativity Enzyme inhibitor

Classification	EC number Enzyme superfamily Enzyme family List of enzymes

Types	EC1 Oxidoreductases(list) EC2 Transferases(list) EC3 Hydrolases(list) EC4 Lyases(list) EC5 Isomerases(list) EC6 Ligases(list)

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