生物来源
pig gastric mucosa
质量水平
形式
lyophilized (salt-free)
比活
~2500 units/mg protein
包装
pkg of 1 g
制造商/商品名称
Roche
最佳pH
1.8-2.2
运输
wet ice
储存温度
2-8°C
一般描述
胃蛋白酶是一种来自猪胃粘膜的天冬氨酸内蛋白酶。它主要用于对酸性介质中的蛋白质和多肽进行非特异性水解,还能促进天然免疫球蛋白的限制性酶解,产生生物活性片段。
特异性
天冬氨酸内肽酶具有相对广泛的特异性。优先裂解:P1和P1′ 位置的疏水性残基,其中芳香族优先。
应用
胃蛋白酶已用于消化大鼠肝脏组织。
制备说明
工作浓度:0.05至0.5 mg/ml
储存条件(工作溶液):在中性pH和无菌条件下,胃蛋白酶溶液可以在2至8℃下稳定储存至少1周。冷冻的酶溶液分装品可能更稳定。
溶剂为10mM HCl(5-10mg/ml)的储备溶液也可以在2至8℃下稳定储存至少1周。避光、密闭保存。
在40℃下短暂(2分钟)孵育对冻干胃蛋白酶或胃蛋白酶溶液的活性的影响可忽略不计。
储存条件(工作溶液):在中性pH和无菌条件下,胃蛋白酶溶液可以在2至8℃下稳定储存至少1周。冷冻的酶溶液分装品可能更稳定。
溶剂为10mM HCl(5-10mg/ml)的储备溶液也可以在2至8℃下稳定储存至少1周。避光、密闭保存。
在40℃下短暂(2分钟)孵育对冻干胃蛋白酶或胃蛋白酶溶液的活性的影响可忽略不计。
分析说明
At 37 °C with hemoglobin as the substrate. One unit is the enzyme activity which liberates the amount of Tyr producing an increase in the absorbance of 0.001/minute at 280 nm.
其他说明
仅用于生命科学研究。不可用于诊断。
警示用语:
Danger
危险分类
Eye Irrit. 2 - Resp. Sens. 1 - Skin Irrit. 2 - STOT SE 3
靶器官
Respiratory system
WGK
WGK 1
闪点(°F)
Not applicable
闪点(°C)
Not applicable
法规信息
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