Merck
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C1345

Sigma-Aldrich

Catalase from bovine liver

powder, suitable for cell culture, 2,000-5,000 units/mg protein

Synonym(s):
H2O2:H2O2 oxidoreductase
CAS Number:
Enzyme Commission number:
EC Number:
MDL number:
eCl@ss:
32160410
NACRES:
NA.75

biological source

bovine liver

Quality Level

product line

BioReagent

form

powder

specific activity

2,000-5,000 units/mg protein

mol wt

tetramer ~250 kDa

technique(s)

cell culture | mammalian: suitable

isoelectric point

5.4

UniProt accession no.

shipped in

wet ice

storage temp.

−20°C

Gene Information

cow ... CAT(280743)

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General description

CAT (catalase) is an endogenous antioxidant enzyme, thus conferring protection to cells against damage by ROS (reactive oxygen species). In humans, this gene is localized to chromosome 11p13, which is composed of 12 introns and 13 exons.

Application

Catalase from bovine liver is used for the following applications:
  • Gel filtration
  • Analytical filtration on Ultrogel and glycerol gradient centrifugation
  • Size exclusion chromatography (HPLC)-HPLC analysis of estrogen receptor
  • Enzyme assays
  • Alcohol oxidase activity
Catalase acts as a natural antioxidant to study the roles of reactive oxygen species in gene expression and apoptosis. It has also been used to protect against oxidative damage to proteins, lipids, and nucleic acids. Industrially, catalses have been used to remove hydrogen peroxide added to milk and cheese, in textile bleaching, and to examine its positive effects on the viability of DNA-repair mutants of E. coli.

Packaging

1, 10, 100 g in poly bottle

Biochem/physiol Actions

Catalase catalyzes the degradation of hydrogen peroxide into water and oxygen. It can also react with alkylhydrogen peroxides, such as methylperoxide and ethylperoxide and the second H2O2 molecule can be replaced by methanol, ethanol, propanol, formate and nitrate as a hydrogen donor.
This product doesn not need any activators, but it is inhibited by 3-amino-1-H-1,2,4 triazole, cyanide, azide, hydroxylamine, cyanogens bromide, 2-mercaptoethanol, dithiothreitol, dianisidnie and nitrate.

Components

Catalase from bovine liver is a tetramer consisting of 4 equal subunits each with a 60 kDa molecular weight. Each of these subunits contains iron bound to a protoheme IX group. The enzyme will also strongly bind to NADP, where NADP and the heme group are within 13.7 angstroms.

Caution

Solutions of catalse should not be frozen. Frozen solution will result in a 50-70% loss of activity.

Unit Definition

One unit will decompose 1.0 μmole of H2O2 per min at pH 7.0 at 25 °C, while the H2O2 conc. falls from 10.3 to 9.2 mM, measured by the rate of decrease of A240.

Preparation Note

This product is a powder suitable for cell culture with activity at 2,000-5,000 units/mg. The enzyme is soluble in 50 mM potassium phosphate buffer at 1 mg/mL and pH 7.0.

Pictograms

Health hazard

Signal Word

Danger

Hazard Statements

Hazard Classifications

Resp. Sens. 1

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

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Certificate of Origin

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Product Information Sheet

More Documents

SDS

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