D4668
Dextranase from Penicillium sp.
lyophilized powder, 100-250 units/mg protein
Sinónimos:
1,6-α-D-Glucan 6-glucanohydrolase
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Número CAS:
UNSPSC Code:
12352204
NACRES:
NA.54
EC Number:
232-803-9
MDL number:
Specific activity:
100-250 units/mg protein
Servicio técnico
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lyophilized powder
Quality Level
specific activity
100-250 units/mg protein
composition
Protein, ~25% Lowry
storage temp.
2-8°C
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.
Physical form
Partially purified, lyophilized powder
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
signalword
Danger
hcodes
pcodes
Hazard Classifications
Resp. Sens. 1
Clase de almacenamiento
11 - Combustible Solids
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
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Contenido relacionado
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)