G7907
Galactose Oxidase from Dactylium dendroides
≥30 units/mg solid
Synonym(s):
D-Galactose:oxygen 6-oxidoreductase
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About This Item
CAS Number:
UNSPSC Code:
12352204
NACRES:
NA.54
EC Number:
232-843-7
MDL number:
Specific activity:
≥30 units/mg solid
Biological source:
fungus (Dactylium dendroides)
biological source
fungus (Dactylium dendroides)
Quality Level
form
lyophilized
specific activity
≥30 units/mg solid
storage temp.
−20°C
General description
Galactose oxidase is a member of radicalcoupled copper oxidases family. It is a fungal secretory enzyme.
Galactose oxidase is an extracellular copper-containing enzyme, secreted by the deuteromycete fungus Dactylium dendroides. It catalyzes the oxidation of a range of primary alcohols, including D-galactose, to the corresponding aldehyde, with reduction of oxygen to hydrogen peroxide.
Application
Galactose Oxidase from Dactylium dendroides has been used as a component for galactose oxidase treatment of arabinogalactan. It has also been used to co-immobilise with peroxidase for the preparation of a biosensor for galactose detection.
Galactose oxidase may be used as an analytical tool for the specific determination of D-galactose in blood plasma, plant extracts, and phospholipids. It could be used for the characterization of terminal D-galactoside units in several polymers. It may also be useful in the determination of lactose.
Biochem/physiol Actions
Galactose oxidase has several applications in bioanalytics and histology. This free radical enzyme possess high substrate specificity.
Galactose oxidase catalyzes the coversion of D-galactose to D-galacto-hexodialdose.
2-Deoxy-D-galactose, lactose, melibiose, raffinose and stachyose react with galactose oxidase in the peroxidase:o-tolidine system.
Essentially no oxidation of D-glucose, L-galactose, L-arabinose or D-glucuronate has been observed.
2-Deoxy-D-galactose, lactose, melibiose, raffinose and stachyose react with galactose oxidase in the peroxidase:o-tolidine system.
Essentially no oxidation of D-glucose, L-galactose, L-arabinose or D-glucuronate has been observed.
The specificity for galactose and other sugars is similar to that described by Avigad.
Physical form
Lyophilized, contains buffer salts and stabilizer
Preparation Note
Chromatographically purified
Other Notes
One unit will produce a ΔA425 of 1.0 per min at pH 6.0 at 25 °C, in a peroxidase and o-tolidine system. Reaction volume = 3.4 mL. Light path = 1 cm.
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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
Regulatory Information
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Rapid and sensitive galactose oxidase-peroxidase biosensor for galactose detection with prolonged stability
Tkac J, et al.
BioTechnology: An Indian Journal, 13(12), 931-936 (1999)
Copper metalloenzymes
Comprehensive Natural Products II (2010)
Avgousta Ioannou et al.
Chemical communications (Cambridge, England), 47(40), 11228-11230 (2011-09-15)
Galactose oxidase (GOase) was shown to oxidise several C2/C3 fluorinated galactose analogues. Interestingly, the enzyme was able to distinguish between the 2,3-tetrafluorinated galactose and its epimeric glucose analogue, and this represents the first reported biotransformation of a heavily fluorinated sugar.
Global Trade Item Number
| SKU | GTIN |
|---|---|
| G7907-450UN | 04061832844138 |
| G7907-150UN | 04061833643600 |