C9284
Catalase−Agarose
pH 5.4(isoelectric point), ammonium sulfate suspension, enzyme from bovine liver
Sinónimos:
H2O2:H2O2 Oxidoreductase
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About This Item
MDL number:
UNSPSC Code:
12352204
NACRES:
NA.54
Productos recomendados
biological source
enzyme from bovine liver
description
optimum pH ~ 7.0
form
ammonium sulfate suspension
mol wt
tetramer ~250 kDa
concentration
≥800 units/mL
extent of labeling
60,000-120,000 units per g agarose (1900-3800 units per ml of agarose)
matrix
4% cross-linked beaded agarose
pH
5.4(isoelectric point)
storage temp.
2-8°C
Application
Catalase agarose has been used in a study to advance the treatment of oxidative stress in neurodegenerative diseases. Catalase agarose has also been used in a study to investigate the growth of cyanobacterium on agar media in the presence of heterotrophic bacteria.
Catalases have a wide range of industrial applications. The enzyme is used for the removal of traces of (H2O2) that is added to milk and cheese during sterilization. It is used for the degradation of peroxide used in textile bleaching to prevent any problems in subsequent dyeing. Coupled with oxidases, the enzyme is used to prevent the inactivation of oxidases by the action of high concentration of peroxide. It is also used to prevent side reactions caused by (H2O2) that can degrade the target product.
Biochem/physiol Actions
Catalase activity is constant over the pH range of 4.0-8.5. Each subunit of the tetramer contains iron bound to a protoheme IX group. The enzyme also strongly binds NADP, which is in close proximity to the heme group. The enzyme activity is inhibited by 3-amino-1-H-1,2,4 triazole, cyanide, azide, hydroxylamine, cyanogen bromide, 2-mercaptoethanol, dithiothreitol, dianisidine, and nitrate. Incubation of catalase with ascorbate or ascorbate/Cu2+ results in degradation of the catalase molecule.
Caution
Freezing of solutions is not recommended.
Unit Definition
One unit will decompose 1.0 μmole of H2O2 per min at pH 7.0 at 25 °C, while the H2O2 concentration falls from 10.3 to 9.2 mM, measured by the rate of decrease of A240.
Physical form
Suspension in 3.2 M (NH4)2SO4, pH 7, containing preservative
inhibitor
Referencia del producto
Descripción
Precios
signalword
Danger
hcodes
pcodes
Hazard Classifications
Resp. Sens. 1
Storage Class
10 - Combustible liquids
wgk_germany
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, multi-purpose combination respirator cartridge (US)
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