Urease
Multiprotein Nickel-containing complex which hydrolyses urea / From Wikipedia, the free encyclopedia
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Ureases (EC 3.5.1.5), functionally, belong to the superfamily of amidohydrolases and phosphotriesterases.[2] Ureases are found in numerous bacteria, fungi, algae, plants, and some invertebrates, as well as in soils, as a soil enzyme. They are nickel-containing metalloenzymes of high molecular weight.[3]
These enzymes catalyze the hydrolysis of urea into carbon dioxide and ammonia:
- (NH2)2CO + H2O ureaseā CO2 + 2NH3
The hydrolysis of urea occurs in two stages. In the first stage, ammonia and carbamic acid are produced. The carbamate spontaneously and rapidly hydrolyzes to ammonia and carbonic acid. Urease activity increases the pH of its environment as ammonia is produced, which is basic.