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3.2.1.91: cellulose 1,4-beta-cellobiosidase (non-reducing end)

This is an abbreviated version!
For detailed information about cellulose 1,4-beta-cellobiosidase (non-reducing end), go to the full flat file.

Word Map on EC 3.2.1.91

Reaction

2 cellohexaose + 2 H2O = 2 cellotriose +

cellotetraose
+
cellobiose

Synonyms

1,4-beta-cellobiohydrolase, 1,4-beta-D-glucan cellobiohydrolase, 1,4-beta-glucan cellobiohydrolase, 1,4-beta-glucan cellobiosidase, avicelase, avicelase II, beta-1,4-glucan cellobiohydrolase, beta-1,4-glucan cellobiosylhydrolase, beta-1,4-glycanase, Beta-1,4-glycanase CEX, Beta-glucancellobiohydrolase, C1 cellulase, CBH, CBH 1, Cbh C, CBH I, CBH Ib, CBH II, CBH IIb, CBH1, CBH2, Cbh6B, Cbh9A, CbhA, CBHI, CBHII, Cbhl.2, CBM3-GH5, CBP120, CBP95, CbsA, Cel5A, Cel6, Cel6A, Cel6B, Cel6C, Cel7A, Cel7D, CelA, CelAB, CelB, CelC7, CelK, cellobiohydrolase, cellobiohydrolase 1, cellobiohydrolase 9A, cellobiohydrolase A, cellobiohydrolase class II, cellobiohydrolase I, cellobiohydrolase II, cellobiohydrolase, exo-, cellobiosidase, cellobiosidase, 1,4-beta-glucan, Celluclast 1.5, Cellulase, cellulase, C1, Cex, Csac_1078, Ex-1, Ex-4, exo-1,4-beta-D-glucan cellobiohydrolase, exo-1,4-beta-D-glucanase, exo-beta-1,4-cellobiohydrolase, exo-beta-1,4-glucan cellobiohydrolase, exo-cellobiohydrolase, exocellobiohydrolase, exocellulase, exocellulase E3, exoglucanase, GH5, glucanase, Huta_2387, More, nonreducing end-acting cellobiohydrolase, oligosaccharide-specific cellobiohydrolase, PSCase, SCO6546, Ta Cel7A, THITE_126432, TTCBH6B

ECTree

     3 Hydrolases
         3.2 Glycosylases
             3.2.1 Glycosidases, i.e. enzymes that hydrolyse O- and S-glycosyl compounds
                3.2.1.91 cellulose 1,4-beta-cellobiosidase (non-reducing end)

Temperature Range

Temperature Range on EC 3.2.1.91 - cellulose 1,4-beta-cellobiosidase (non-reducing end)

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TEMPERATURE RANGE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
23 - 60
-
10% of maximal activity
30 - 50
-
more than 70% of maximum activity, 17-residue N-terminal truncation mutant
30 - 55
-
about 60% activity at 30°C, about 55% activity at 35°C, about 80% activity at 40°C, about 75% activity at 45°C, 100% activity at 50°C, about 40% activity at 55°C, and almost no activity at 60°C
30 - 60
40 - 90
Thermochaetoides thermophila
more than 50% activity between 40 and 90°C
45 - 55
-
80% and 95% of the maximum activity appearing at 45°C and 55°C
60 - 70
-
60°C: optimum, 70°C: appreciable amount of activity
70
presence of 3 M NaCl, 225% of the activity with 2 M NaCl at 37°C
80
presence of 5 M NaCl, 210% of the activity with 2 M NaCl at 37°C
additional information
thermodynamics and kinetics of the immunoglobulin-like module/catalytic module pair, wild-type and mutant enzymes, overview