Urease (Ure) enzyme is present in the cytosol. It is active at acidic pH and is expressed at 28°C. Urease binds to nickel and is present in archaea, bacteria, unicellular eukaryotes and plants. Jack bean urease was the first enzyme to be crystallized and the first enzyme found to contain nickel. It is a multi-subunit enzyme, consisting of 91 kDa subunits in three protein forms.
Urease from Canavalia ensiformis (Jack bean) has been used: to spike urine samples to determine the hydrolysis rate of urea in pure urine It has also been used to study the inhibitory action of polyhalogenated benzo- and naphthoquinones on Bacillus pasteurii and Canavalia ensiformis.
20000, 100000, 500000, 1000000 units in poly bottle
Urease is involved in purine metabolism and the urea cycle. It hydrolyze urea to produce ammonia and carbon dioxide.
在洋刀豆（Jack Bean）中，脲酶促进L-刀豆氨酸转化为副刀豆氨酸。 
一微摩尔单位是指在pH 7.0，25℃下每分钟催化尿素释放1.0 μM NH3所需的酶活性。它相当于1.0 I.U.或0.054 Sumner单位（在pH 7.0，20°C，5分钟内产生1.0 mg氨氮）