C3556
Katalase aus Humanerythrocyten
≥90% (SDS-PAGE), buffered aqueous solution, ≥30,000 units/mg protein
Synonym(e):
H2O2:H2O2 Oxidoreduktase
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About This Item
Empfohlene Produkte
Biologische Quelle
human erythrocytes
Qualitätsniveau
Assay
≥90% (SDS-PAGE)
Form
buffered aqueous solution
Spezifische Aktivität
≥30,000 units/mg protein
Mol-Gew.
tetramer ~250 kDa
Konzentration
≤10 mg/mL
Methode(n)
cell based assay: suitable
UniProt-Hinterlegungsnummer
Versandbedingung
wet ice
Lagertemp.
−20°C
InChI
1S/C9H10O3/c1-2-12-9(11)7-3-5-8(10)6-4-7/h3-6,10H,2H2,1H3
InChIKey
NUVBSKCKDOMJSU-UHFFFAOYSA-N
Angaben zum Gen
human ... CAT(847)
Allgemeine Beschreibung
Research area: Cell Signaling
Human catalase is a member of the monofunctional heme-containing catalases. It is an intracellular enzyme located at higher concentrations in the liver, erythrocytes, and kidney. Catalase is a homo-tetrameric protein and comprises amino acid residues, one heme group that is iron III protoporphyrin IX, and a nicotinamide adenine dinucleotide phosphate (NADPH) molecule. It is a ubiquitous enzyme found in most aerobic organisms. The catalase (CAT) gene is located on the human chromosome at 11p13.
Human catalase is a member of the monofunctional heme-containing catalases. It is an intracellular enzyme located at higher concentrations in the liver, erythrocytes, and kidney. Catalase is a homo-tetrameric protein and comprises amino acid residues, one heme group that is iron III protoporphyrin IX, and a nicotinamide adenine dinucleotide phosphate (NADPH) molecule. It is a ubiquitous enzyme found in most aerobic organisms. The catalase (CAT) gene is located on the human chromosome at 11p13.
Anwendung
Catalase from human erythrocytes has been used:
- to prevent reoxidation of reduced cytochrome c by H2O2 while measuring the production of superoxide with cytochrome C.
- as a component of the imaging buffer for stochastic optical reconstruction microscopy (STORM) imaging of human skin fibroblasts
- as a component of the gloxy mix for single-molecule imaging
Biochem./physiol. Wirkung
Deficiency of catalase and oxidative stress are associated with vitiligo, hypertension, Alzheimer′s disease, diabetes mellitus, and acatalasemia. Catalase shows a dichotomous role in cancer as its expression is at a higher level in chronic lymphocytic leukemia, glioma, melanoma, and gastric cancer and lower levels of expression are seen in acute myeloid leukemia, pancreatic, lung, prostate, and skin (non-melanoma) cancers.
Catalase activates the decomposition of hydrogen peroxide, a reactive oxygen species, into water and oxygen. It functions as a natural antioxidant, protecting cells against oxidative damage to proteins, lipids and nucleic acids. Catalase has also been used to study the role reactive oxygen species play in gene expression and apoptosis.
Einheitendefinition
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.
Physikalische Form
Solution in 50 mM Tris, pH 8.0
Lagerung und Haltbarkeit
Tightly closed. Dry. Keep locked up or in an area accessible only to qualified or authorized
persons
persons
Hinweis zur Analyse
Protein determined by biuret
Inhibitor
Produkt-Nr.
Beschreibung
Preisangaben
Signalwort
Danger
H-Sätze
P-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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Diabetes/metabolism research and reviews, 20(3), 219-224 (2004-05-11)
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Aerobic organisms possess numerous antioxidant enzymatic families, including catalases, superoxide dismutases (SODs), peroxiredoxins (PRDXs), and glutathione peroxidases (GPXs), which work cooperatively to protect cells from an excess of reactive oxygen species (ROS) derived from endogenous metabolism or external microenvironment. Catalase
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