ROAMYGL
Roche
Amyloglucosidase
from Aspergillus niger
Synonym(s):
Glucoamylase, disaccharidase-type-α-D-glucosidase
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About This Item
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biological source
Aspergillus niger
Quality Level
form
suspension
specific activity
~14 units/mg protein (At 25 °C with glycogen as the substrate; standardized with BSA.)
mol wt
Mr 97 kDa
packaging
pkg of 10 mL (10102857001 [100 mg])
manufacturer/tradename
Roche
parameter
55 °C optimum reaction temp.
optimum pH
4.6-4.8
storage temp.
2-8°C
Related Categories
General description
Amyloglucosidase is synthesized by several Aspergillus genus species. It is a disaccharidase–type α-glucosidase. This enzyme is an exo-enzyme and one of the major industrial enzymes. The stability of amyloglucosidase can be increased by immobilization.
Specificity
Cleaves terminal glucoses that are α1,4- or α1,6-linked to an oligo- or polysaccharide of multiple glucose units. The product is D-glucose.
Heat inactivation: Heat inactivation is recommended at 80 °C for 45 minutes, followed by rapidly cooling down.
Heat inactivation: Heat inactivation is recommended at 80 °C for 45 minutes, followed by rapidly cooling down.
Application
Amyloglucosidase from Aspergillus niger can be used for the hydrolyzation of terminal α1,4- and α1,6-glucosidic bonds (glucose-glucose bonds) in polysaccharides (e.g., starch, dextrins, glycogen), removing glucose units sequentially from the non-reducing end of the molecule. The enzyme will also cleave maltose and maltosides (maltotriose, maltotetraose, etc.).
Biochem/physiol Actions
Amyloglucosidase from Aspergillus niger is capable of hydrolyzing the α-D-(1-4), the α-D-(1-6), and the α-D-(1-3) glucosidic bonds of oligosaccharides. Amyloglucosidase is an extracellular enzyme that converts starch to dextrins and glucose. The enzyme is used in the starch-processing industry for the commercial production of D-glucose from corn syrups.
Unit Definition
Unit Conversion: One unit (+25 °C; glycogen as substrate) corresponds to 8.6 U (+60 °C; starch as substrate).
Physical form
Suspension in 3.2 M ammonium sulfate solution, pH approximately 6
Other Notes
For life science research only. Not for use in diagnostic procedures.
Storage Class Code
12 - Non Combustible Liquids
WGK
WGK 1
Flash Point(F)
does not flash
Flash Point(C)
does not flash
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Recent Advances in Basic and Applied Aspects of Industrial Catalysis (1998)
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Folia microbiologica, 41(2), 165-174 (1996-01-01)
A. niger produced alpha-glucosidase, alpha-amylase and two forms of glucoamylase when grown in a liquid medium containing raw tapioca starch as the carbon source. The glucoamylases, which formed the dominant components of amylolytic activity manifested by the organism, were purified
High-potency amyloglucosidase-producing mold of the Aspergillus niger group.
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