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1.24568

Sigma-Aldrich

蛋白酶 K

(from Tritirachium album) chromatographically purified lyophilized 30 mAnson-U/mg for biochemistry and molecular biology EC 3.4.21.14

同義詞:

蛋白酶 K 来源于林伯氏白色念球菌, 旋毛虫属碱性蛋白酶, 肽链内切酶

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About This Item

CAS號碼:
酶委員會編號:
MDL號碼:
分類程式碼代碼:
12352204
酶委員會索引編號:
254-457-8
NACRES:
NA.51

品質等級

形狀

solid

分子量

28.93 kDa

pH值

6.2-6.8 (20 °C, 10 g/L in H2O)

密度

1.1 g/cm3

體積密度

35 kg/m3

儲存溫度

2-8°C

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應用

在分离DNA和RNA的过程中,用于核酸酶的蛋白水解失活。
用于去除内毒素结合的阳离子蛋白,如溶菌酶和核糖核酸酶A。
据报道,其可用于分离肝、酵母和绿豆线粒体
用于测定酶在细胞膜上的定位
用于石蜡包埋组织切片的处理,暴露用于抗体标记的抗原结合位点。
用于可传播海绵状脑病(TSE)研究中朊病毒脑组织样本蛋白的消化。

生化/生理作用

蛋白酶K是一种稳定且具有高活性的丝氨酸蛋白酶。晶体和分子结构研究证据表明该酶属于枯草素家族,具有活性位点催化三联体(Asp39-His69-Ser224)。它在一系列广泛的环境中均稳定:pH,缓冲盐,去污剂(SDS)以及温度。 在0.1-0.5% SDS存在的情况下,蛋白酶K可保持活性,在不损害分离DNA完整性的前提下,可以消化DNA制剂中的多种蛋白质和核酸酶。

分析報告

外观(颜色):白色
外观(描述):冻干粉末
活性(血红蛋白; pH 7.5;37 °C): ≥ 30.0 mAnsonU/mg
比活力(以蛋白质计算): ≥ 40 mAnsonU/mg
脱氧核糖核酸酶(切口活性;pBR 322;6 H;37 °C):未检出
RNA酶(RNA;2 h;37°C):未检出

象形圖

Exclamation markHealth hazard

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

閃點(°F)

Not applicable

閃點(°C)

Not applicable


分析證明 (COA)

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