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生物源
Canavalia ensiformis
種類
Type III
形狀
powder
比活性
15,000-50,000 units/g solid
分子量
~544620 Da
應用
diagnostic assay manufacturing
儲存溫度
2-8°C
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一般說明
亚基分子量：约 90,770
由六个亚基组成，总分子量：约 544620
由六个亚基组成，总分子量：约 544620
脲酶是一种胞质酶，它会催化尿素水解为氨和二氧化碳，首先转化为氨基甲酸酯，然后氨基甲酸酯在水解时进一步分解为氨和碳酸/碳酸盐。 脲酶是含有镍辅因子的金属酶。 脲酶天然存在于植物、真菌和某些细菌中。 詹姆斯·B·萨姆纳（James B.Sumner）于1926年首次从矮刀豆中分离出了脲酶。
生化／生理作用
来自洋刀豆的脲酶通过释放由昆虫肠道中发现的蛋白酶切割的有毒小肽起杀虫剂的作用。
單位定義
一微摩尔单位，在 pH7.0，25℃ 下，每分钟从尿素中释放出 1.0 μmole 的 NH3。它相当于1.0 I.U. 或 0.054 Sumner 单位（在 pH 7.0，20°C，5 分钟内 1.0 mg 氨氮）
訊號詞
Danger
危險分類
Eye Irrit. 2 - Resp. Sens. 1 - Skin Irrit. 2 - STOT SE 3
標靶器官
Respiratory system
儲存類別代碼
11 - Combustible Solids
水污染物質分類（WGK）
WGK 1
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Journal of insect physiology, 55(3), 255-263 (2009-01-06)
Ureases are metalloenzymes that are widespread among plants, fungi and bacteria. Urease isoforms (jack bean urease-JBU and canatoxin) from Canavalia ensiformis seeds are toxic to insects and fungi, suggesting a role in plant defense. The entomotoxic effect is due to
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Today, diverse studies report the benefits of probiotics, such as inhibitory effects on pathogens, aid in the management or prevention of chronic intestinal inflammatory diseases or atopic syndromes, and support to the immune system. Potential beneficial applications abound, researchers continue to evaluate the effictiveness and clarify the mechanisms of action of probiotics.
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