The smallest package size available for this item is 20,000 units. The activity varies from lot to lot and may range from 15,000 - 50,000 units per gram. The 20,000 unit package size may contain 0.400 - 1.33 grams of powder.
U1500
Urease from Canavalia ensiformis (Jack bean)
Type III, powder, 15,000-50,000 units/g solid
Synonym(s):
Jack bean urease, Urea amidohydrolase
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| Size/SKU | Availability | Price |
|---|---|---|
20000 units | Check Cart for Availability | $97.70 |
100000 units | Check Cart for Availability | $336.00 |
500000 units | Check Cart for Availability | $1,190.00 |
1000000 units | Check Cart for Availability | $1,910.00 |
About This Item
CAS Number:
UNSPSC Code:
12352204
eCl@ss:
32160410
EC Number:
232-656-0
NACRES:
NA.54
MDL number:
EC Number:
Specific activity:
15,000-50,000 units/g solid
Biological source:
Canavalia ensiformis
$97.70
Check Cart for Availability
biological source
Canavalia ensiformis
Quality Segment
type
Type III
form
powder
specific activity
15,000-50,000 units/g solid
mol wt
~544620 Da
application(s)
diagnostic assay manufacturing
storage temp.
2-8°C
General description
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 is a cytosolic enzyme that catalyzes the hydrolysis of urea to ammonia and carbon dioxide, with initial conversion to carbamate, and the carbamate breaks down further, on hydrolysis, into ammonia and to carbonic acid / carbonate. Urease is a metalloenzyme that contains nickel as a co-factor. Urease occurs naturally in plants, fungi, and certain bacteria. James B. Sumner first isolated urease from jack bean in 1926.
Biochem/physiol Actions
Other Notes
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)
1 of 1
This Item | |||
|---|---|---|---|
| description Type III, powder, 15,000-50,000 units/g solid | description Type IX, powder, 50,000-100,000 units/g solid | description Type C-3, powder, ≥600,000 units/g solid | description powder, white, ~8 U/mg |
| specific activity 15,000-50,000 units/g solid | specific activity 50,000-100,000 units/g solid | specific activity ≥600,000 units/g solid | specific activity ~8 U/mg |
| biological source Canavalia ensiformis | biological source - | biological source Canavalia ensiformis | biological source Canavalia ensiformis |
| form powder | form powder | form powder | form powder |
| application(s) diagnostic assay manufacturing | application(s) - | application(s) - | application(s) - |
| mol wt ~544620 Da | mol wt ~544620 Da | mol wt ~544620 Da | mol wt Mr ~480000 |
| storage temp. 2-8°C | storage temp. 2-8°C | storage temp. −20°C | storage temp. −20°C |
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Signal Word
Danger
Hazard Codes
Precautionary Statements
Hazard Classifications
Eye Irrit. 2 - Resp. Sens. 1 - Skin Irrit. 2 - STOT SE 3
Target Organs
Respiratory system
Storage Class
11 - Combustible Solids
WGK
WGK 1
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what's the minimum quantity to purchase?
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Do you have Food Grade / Pharma Grade Powder for the same
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Unfortunately, a food grade or pharma grade Urease powder is not currently available.
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WHAT IS THE ENZYME ACTIVITY
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The lot-specific activity is reported in the Certificate of Analysis.
Please see the link below to access a specific lot or review a sample Certificate:
https://www.sigmaaldrich.com/product/sigma/U1500#product-documentationHelpful?
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