The Urease reference article from the English Wikipedia on 24-Apr-2004 (provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

Urease

Urease is an enzyme that catalyzes the hydrolysis of urea into carbon dioxide and ammonia. The reaction occurs as follows:

(NH2)2CO + 3H2O → CO2 + 2NH4OH

In 1926 James Sumner shows that urease is a protein. Urease is found in bacteria, yeast and several higher plants.

Characteristics:

• Molecular weight : 480 kDa
• Optimum pH : 7.4
• Enzymatic specificity : urea and hydroxyurea
• Inhibitors : heavy metals, sodium, potassium

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