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Merck

SRE0005

Sigma-Aldrich

蛋白酶 K 来源于林伯氏白色念球菌

Reagents designed and manufactured under current ISO 13485 certification.

别名:

肽链内切酶

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About This Item

CAS号:
EC號碼:
MDL號碼:
分類程式碼代碼:
12352204
NACRES:
NA.32

等級

for molecular biology

品質等級

形狀

buffered aqueous glycerol solution

分子量

28.93 kDa

濃度

≥10 mg/mL protein
≥800 unit/mL

雜質

≤500 pg/mg DNA (PicoGreen® assay)

應用

diagnostic assay manufacturing

異物活動

DNAse, RNAse, exonuclease, endonuclease, and nickase, none detected

運輸包裝

wet ice

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。

單位定義

在pH 7.5,37 °C 条件下,一单位的酶每分钟将会尿素变性的血红蛋白以产生与1.0 μ摩尔 (181 μg) 酪氨酸等同的颜色(Folin-Ciocalteu试剂提供的颜色)。

法律資訊

PicoGreen is a registered trademark of Life Technologies

象形圖

Health hazardExclamation mark

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

10 - Combustible liquids

水污染物質分類(WGK)

WGK 1

閃點(°F)

Not applicable

閃點(°C)

Not applicable


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Lactobacillus plantarum 510, previously isolated from a koshu vineyard in Japan, was found to produce a bacteriocin-like inhibitory substance which was purified and characterized. Mass spectrometry analysis showed that the mass of this bacteriocin is 4,296.65 Da. A partial sequence, NH2-
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Bordetella pertussis is the causative agent of pertussis, a highly contagious disease of the human respiratory tract. Despite very high vaccine coverage, pertussis has reemerged as a serious threat in the United States and many developing countries. Thus, it is
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The accumulation of the misfolded forms of cellular prion protein, i.e. prions (PrPSc), in the brain is one of the crucial characteristics of fatal neurodegenerative disorders, called transmissible spongiform encephalopathies (TSEs). Cellular prion protein is normally linked to the cell
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Journal of microbiological methods, 94(3), 161-169 (2013-07-03)
Molecular techniques, such as polymerase chain reaction (PCR) and quantitative PCR (qPCR), are very sensitive, but may detect total DNA present in a sample, including extracellular DNA (eDNA) and DNA coming from live and dead cells. DNase I is an

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