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Merck

L7395

Sigma-Aldrich

Lipoxidase Zubereitung aus Glycine max (soybean)

Type I-B, lyophilized powder, ≥50,000 units/mg solid

Synonym(e):

15-lipoxygenase, LOX A, Linoleate:oxygen oxidoreductase, Lipoxygenase

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About This Item

CAS-Nummer:
EG-Nummer:
MDL-Nummer:
UNSPSC-Code:
12352204
NACRES:
NA.54

Typ

Type I-B

Form

lyophilized powder

Spezifische Aktivität

≥50,000 units/mg solid

Mol-Gew.

94 kDa

Versandbedingung

wet ice

Lagertemp.

−20°C

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Allgemeine Beschreibung

Lipoxidases (LOXs), or lipoxygenases, are nonheme iron proteins. Lipoxygenases are widely present in plants, some microorganisms, and animals. They are categorized as LOX-1, LOX-2, and LOX-3 with respect to pH and optimum temperature, substrate specificity, and level of inhibition by different agents.

Anwendung

Lipoxidase from Glycine max (soybean) has been used:
  • to study the effects of 2-(α-D-glucopyranosyl)methyl-2,5,7,8-tetramethylchroman-6-ol(TMG) on oxidation of lipoproteins
  • as a representative enzyme for lipoxygenases in microplate assay platform to screen for enzymes degrading wood extractives
  • as a positive control in lipoxygenase inhibitory activity assay

The soybean enzyme will use arachidonic acid as a substrate, with ~ 15% of the activity indicated using linoleic acid as the substrate; the product of arachidonic acid oxidation is 12- or 15-hydroperoxyarachidonic acid (12-HPETE or 15-HPETE).

Biochem./physiol. Wirkung

Lipoxidases are deactivated by heat treatment near 100°C for 5 to 10 minutes. Studies show that gamma irradiation treatment decreases the specific activity of soybean lipoxygenases. These enzymes are used in studies related to asthma and allergies. Lipoxidases are applicable for industrial bio-transformations such as in the production of aroma fine chemicals.
Catalyzes the hydroperoxidation of lipids containing a cis,cis-1,4-pentadiene structure.

Einheitendefinition

One unit will cause an increase in A234 of 0.001 per min at pH 9.0 at 25 °C when linoleic acid is the substrate in 3.0 ml volume (1 cm light path). One A234 unit is equivalent to the oxidation of 0.12 μmole of linoleic acid.

Physikalische Form

Contains stabilizer and NaCl

Piktogramme

Health hazard

Signalwort

Danger

H-Sätze

Gefahreneinstufungen

Resp. Sens. 1

Lagerklassenschlüssel

11 - Combustible Solids

WGK

WGK 1

Flammpunkt (°F)

Not applicable

Flammpunkt (°C)

Not applicable

Persönliche Schutzausrüstung

Eyeshields, Gloves, type N95 (US)


Analysenzertifikate (COA)

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Chemical composition and lipoxygenase activity in soybeans (Glycine max L. Merr.) submitted to gamma irradiation
de Barros EA, et al.
Radiation Physics and Chemistry, 98, 29-32 (2014)
Ewelina Zielińska et al.
Nutrients, 9(9) (2017-09-05)
This study investigated the effect of heat treatment of edible insects on antioxidant and anti-inflammatory activities of peptides obtained by in vitro gastrointestinal digestion and absorption process thereof. The antioxidant potential of edible insect hydrolysates was determined as free radical-scavenging
Microplate enzyme assay for screening lipoxygenases to degrade wood extractives
Nguyen D, et al.
Biocatalysis and Biotransformation, 25(2-4), 202-210 (2007)
Xiao-Hui Ma et al.
Signal transduction and targeted therapy, 7(1), 288-288 (2022-08-16)
Myocardial ischemia/reperfusion (I/R) injury is a classic type of cardiovascular disease characterized by injury to cardiomyocytes leading to various forms of cell death. It is believed that irreversible myocardial damage resulted from I/R occurs due to oxidative stress evoked during
Jana Löwe et al.
Advanced science (Weinheim, Baden-Wurttemberg, Germany), 7(13), 1902973-1902973 (2020-07-17)
A biotechnological approach toward the plant metabolite and regulator cis-(+)-12-oxophytodienoic acid (cis-(+)-12-OPDA) in a one-pot process with >99% conversion, at least 90% selectivity and ≤10% of side products as well as a high diastereoselectivity (leading to d.r. of at least

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