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G7400

Sigma-Aldrich

Galactose Oxidase from Dactylium dendroides

lyophilized powder, ≥3,000 units/g solid

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Synonym(s):
D-Galactose:oxygen 6-oxidoreductase
CAS Number:
Enzyme Commission number:
EC Number:
MDL number:

biological source

fungus (Dactylium dendroides)

form

lyophilized powder

specific activity

≥3,000 units/g solid

storage temp.

−20°C

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This Item
G7907G7141G2133
specific activity

≥3,000 units/g solid

specific activity

≥30 units/mg solid

specific activity

100,000-250,000 units/g solid (without added oxygen)

specific activity

≥100,000 units/g solid (without added oxygen)

form

lyophilized powder

form

lyophilized

form

lyophilized powder

form

lyophilized powder

storage temp.

−20°C

storage temp.

−20°C

storage temp.

−20°C

storage temp.

−20°C

Quality Level

200

Quality Level

200

Quality Level

200

Quality Level

200

General description

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 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.

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.

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.

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


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Yuling Sun et al.
Biomacromolecules, 22(6), 2595-2603 (2021-05-07)
Antifreeze glycoproteins (AFGPs) are able to bind to ice, halt its growth, and are the most potent inhibitors of ice recrystallization known. The structural basis for AFGP's unique properties remains largely elusive. Here we determined the antifreeze activities of AFGP
Bei Yue et al.
Frontiers in pharmacology, 12, 774560-774560 (2021-11-20)
Irinotecan (CPT11), a broad-spectrum cytotoxic anticancer agent, induces a series of toxic side-effects. The most conspicuous side-effect is gastrointestinal mucositis, including nausea, vomiting, and diarrhea. A growing body of evidence indicates that bacteria β-glucuronidase (GUS), an enzyme expressed by intestinal
Grant E Henderson et al.
Bioconjugate chemistry, 22(5), 903-912 (2011-03-15)
The site-specific modification of proteins is expected to be an important capability for the synthesis of bioconjugates in the future. However, the traditional repertoire of reactions available for the direct modification of proteins suffers from lack of specificity, necessitating costly
A R Shatzman et al.
Journal of bacteriology, 130(1), 455-463 (1977-04-01)
The effects of pH and growth density on the amount of an extracellular enzyme, galactose oxidase, synthesized by the fungus Dactylium dendroides were studied. Growth at a pH below 6.7 caused a decrease in the ability of the organism to
Development of a galactose biosensor with galactose oxidase-immobilized epidermis of Solanum lycopersicum: potential point-of-care testing for citrin deficiency in high-prevalence areas.
Hencher H C Lee et al.
Clinica chimica acta; international journal of clinical chemistry, 412(3-4), 391-392 (2010-10-26)

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