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About This Item
CAS Number:
UNSPSC Code:
12352204
NACRES:
NA.54
EC Number:
232-803-9
MDL number:
Product Name
Dextranase from Penicillium sp., lyophilized powder, 100-250 units/mg protein
form
lyophilized powder
specific activity
100-250 units/mg protein
composition
Protein, ~25% Lowry
storage temp.
2-8°C
Quality Level
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Application
Dextranase from Penicillium sp. can be used to modify alternan. Dextranase from Penicillium sp. has also been used in a study that explored the possibility that the Dex protein might adopt a fold unfamiliar to any known structure.
Biochem/physiol Actions
The product is an endodextranase that hydrolyzes α-(1,6)-glucosidic linkages in dextran. Dextrans are undesirable compounds synthesized from sucrose by microbial contaminants during sugar production. They increase viscosity of the flow and decrease industrial recovery. Dextranase has been used for hydrolyzing dextran at sugar mills in order to improve efficiency of sugar production.
Other Notes
One unit will liberate 1.0 μmole of isomaltose (measured as maltose) per min at pH 6.0 at 37 °C, using dextran as substrate.
View more information on enzymes for complex carbohydrate analysis at www.sigma-aldrich.com/enzymeexplorer
Physical form
Partially purified, lyophilized powder
signalword
Danger
hcodes
pcodes
Hazard Classifications
Resp. Sens. 1
Storage Class
11 - Combustible Solids
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
Regulatory Information
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Timothy D Leathers et al.
Biotechnology letters, 31(2), 289-293 (2008-10-22)
Alternan is a unique glucan with a backbone structure of alternating alpha-(1 --> 6) and alpha-(1 --> 3) linkages. Previously, we isolated strains of Penicillium sp. that modify native, high molecular weight alternan in a novel bioconversion process to a
T Pons et al.
Proteins, 31(4), 345-354 (1998-06-17)
The DEX gene encodes an extracellular dextranase (EC 3.2.1.11); this enzyme hydrolyzes the alpha(1,6) glucosidic bond contained in dextran to release small isomaltosaccharides. Sequence analysis has revealed only one homologous sequence, CB-8 protein, from Arthrobacter sp., with 30% sequence identity.
Dextranase in sugar industry: A review
Efrain Rodriguez Jimenez
Sugar Tech, 11(2), 124-134 (2009)
Lin Chen et al.
Journal of microbiology and biotechnology, 19(12), 1506-1513 (2010-01-16)
Alpha-dextranase, which can hydrolyze dextran, is largely used in the sugar industry. However, a thermostable alpha- dextranase is needed to alleviate the viscosity of syrups and clean blocked machines. Thus, to improve the optimal temperature of Lipomyces starkeyi alpha-dextranase expressed
Ki Hyun Nam et al.
Biochemical and biophysical research communications, 383(2), 183-186 (2009-04-07)
Degradation of polysaccharides by cellulases and xylanases plays an important role in the carbon cycle, but only occurs in plant cell walls, a few bacteria and some animals. This process is also critical in processes such as biomass degradation and
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