Description
Ureases, functionally, belong to the superfamily of amidohydrolases and phosphotriesterases. It is an enzyme that catalyzes the hydrolysis of urea into carbon dioxide and ammonia. The reaction occurs as follows: (NH2)2CO + H2O → CO2 + 2NH3.
Appearance
Sterile Filtered White lyophilized (freeze-dried) powder.
Purity
Greater than 95.0% as determined by: (a) Analysis by RP-HPLC. (b) Anion-exchange FPLC. (c) Analysis by reducing and non-reducing SDS-PAGE Silver Stained gel.
Unit Definition
One Unit oxidizes one micromole of NADH per minute at 25°C, at pH 7.6.
Stability
Lyophilized Urease although stable at room temperature for 3 weeks, should be stored desiccated below -18° C. Upon reconstitution Urease should be stored at 4° C between 2-7 days and for future use below -18°C. For long-term storage it is recommended to add a carrier protein (0.1% HSA or BSA). Please avoid freeze-thaw cycles.
Buffer
Each mg of protein contains 345µg Potassium Phosphate and 25µg EDTA Na2.
