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G7907

Sigma-Aldrich

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:
Enzyme Commission number:
EC Number:
MDL number:
UNSPSC Code:
12352204
NACRES:
NA.54

biological source

fungus (Dactylium dendroides)

Quality Level

form

lyophilized

specific activity

≥30 units/mg solid

storage temp.

−20°C

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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 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.
Galactose oxidase has several applications in bioanalytics and histology. This free radical enzyme possess high substrate specificity.

Unit Definition

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.

Physical form

Lyophilized, contains buffer salts and stabilizer

Preparation Note

Chromatographically purified

inhibitor

Product No.
Description
Pricing

pictograms

Health hazard

signalword

Danger

hcodes

Hazard Classifications

Resp. Sens. 1

Storage Class

11 - Combustible Solids

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable


Certificates of Analysis (COA)

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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)
Development of an immunoassay for larch arabinogalactan and its use in the detection of larch arabinogalactan in rat blood
Groman E V and Gou D
Carbohydrate Research, 301(1-2), 69-76 (1997)
Copper metalloenzymes
Comprehensive Natural Products II (2010)
M J McPherson et al.
The Journal of biological chemistry, 267(12), 8146-8152 (1992-04-25)
The gaoA gene, encoding the secreted copper-containing enzyme galactose oxidase, has been isolated from the Deuteromycete fungus Dactylium dendroides. Degenerate oligonucleotide primers were designed from amino acid sequence data for use in the polymerase chain reaction. A 1.4-kilobase DNA fragment
Takeshi Ito et al.
Talanta, 85(1), 707-712 (2011-06-08)
We proposed a low cost fabrication procedure of a poly(methylmethacrylate) (PMMA) column chip. 3D microchannel structure consisting of four columns in a chip for a mother die was fabricated using dry film photoresist and photolithography technique. Electroforming was applied to

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