The specific concentration of glycerol is considered proprietary, but will range from 50 - 70%.
U1875
Urease from Canavalia ensiformis (Jack bean)
Type III, glycerol solution, 500-800 units/mL
Synonyme(s) :
Jack bean urease, Urea amidohydrolase
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25 ML
162,00 €
100 ML
535,00 €
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Changer de vue
25 ML
162,00 €
100 ML
535,00 €
About This Item
Numéro CAS:
Numéro MDL:
Code UNSPSC :
12352204
eCl@ss :
32160410
Nomenclature NACRES :
NA.54
Produits recommandés
Source biologique
Canavalia ensiformis
Type
Type III
Forme
glycerol solution
Poids mol.
~544620
Concentration
500-800 units/mL
Température de stockage
2-8°C
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Description générale
Subunit molecular weight: ~90,770
Composed of six subunits with total molecular weight: ~544,620
Composed of six subunits with total molecular weight: ~544,620
Urease of jack bean (Canavalia ensiformis), a hexamer of a single chain of 840 amino acid residues, is found in plants, bacteria, fungi, algae, and soil. It is considered the first nickel-containing enzyme and the first enzyme to be crystallized. Ureases exist in several isoforms, some are jack bean urease (JBURE-I), canatoxin (CNTX), and JBURE-IIB. JBURE-I is more abundant than the other two isoforms. Ureases are found in mature seeds.
Application
Urease from Canavalia ensiformis (Jack bean) has been used:
- to assay creatine and creatine phosphate using the sample extracted from the left ventricle (LV) and septal tissue
- to determine the concentration of urea in a stabilized urine sample
- as one of the standards to measure the urease activity of plant extracts
Actions biochimiques/physiologiques
In plants, ureases are essential for the bioavailability/metabolism of nitrogen in nature and defense mechanisms. Ureases are metalloenzymes that catalyze the hydrolysis of urea to release ammonia a nitrogen source for growth and carbon dioxide. They exhibit internal peptides-mediated insecticidal action and fungicidal activity.
Urease activity has been shown to be inhibited by benzpyrene following exposure to light. This inhibition was due to the effect of benzpyrene on urease′s sulfhydryl groups. [1]
Définition de l'unité
One micromolar unit will liberate 1.0 μmole of NH3 from urea per min at pH 7.0 at 25 °C. It is equivalent to 1.0 I.U. or 0.054 Sumner unit (1.0 mg ammonia nitrogen in 5 minutes at pH 7.0 at 20 °C)
Mention d'avertissement
Danger
Mentions de danger
Conseils de prudence
Classification des risques
Eye Irrit. 2 - Resp. Sens. 1 - Skin Irrit. 2 - STOT SE 3
Organes cibles
Respiratory system
Code de la classe de stockage
10 - Combustible liquids
Classe de danger pour l'eau (WGK)
WGK 1
Point d'éclair (°F)
Not applicable
Point d'éclair (°C)
Not applicable
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