货号:EBY0027I
蛋白酶K (源自林伯氏白色念球菌)
Proteinase K,lyophilized powder,from Tritirachium album limber
≥30 U/mg
蛋白酶K是一种枯草蛋白酶类的高活性蛋白酶,用于生物样品中蛋白质的一般降解。从林伯氏白色念球菌(tritirachium album limber)中纯化得到。蛋白酶K是一种切割活性较广的丝氨酸蛋白酶。它切割脂族氨基酸和芳香族氨基酸的羧基端肽键。此酶经纯化去除了RNA酶和DNA酶活性。由于蛋白酶K在尿素和SDS中稳定,还具有降解天然蛋白质的能力。
蛋白酶K性质
CAS号:39450-01-6
分子量:29kDa(SDS-PAGE)
Enzyme Commission Number: 3.4.21.64
EINECS: 254-457-8
MDL number: MFCD00132129
分子量:29kDa(SDS-PAGE)
Enzyme Commission Number: 3.4.21.64
EINECS: 254-457-8
MDL number: MFCD00132129
外观:冻干粉
溶解度:水:可溶 1 mg/mL, 澄清,无色透明
外活性:Dnase ≤30 Kunitz units/mg solid
溶解度:水:可溶 1 mg/mL, 澄清,无色透明
外活性:Dnase ≤30 Kunitz units/mg solid
RNase ≤0.003 Kunitz units/mg solid
蛋白酶K用途
- 基因诊断试剂盒
- 基因组DNA提取试剂盒
- RNA提取试剂盒中去除DNA和RNA制备中的核酸酶
- 提取组织中非蛋白成份降解含有蛋白质的杂质-譬如DNA疫苗和肝素的制备
- 制备脉冲电泳的染色体DNA
- 蛋白质印迹
- 蛋白酶K的一般工作浓度50-100ug/ml
蛋白酶K贮存
干粉状态可在-20℃条件下长期储存。溶解后分装为适当体积,2-8℃短期储存,-20℃长期储存。正确的贮存条件下,干粉状态的有效期可达一年。液体状态在-20℃有效期为半年。打开包装使用后,如果在2~8-20℃环境下放置超过一周时间,建议过滤除菌或增加稳定剂如0.5%叠氮化钠,防止微生物污染。
贮存和稀释缓冲液:50mM Tris-HCl缓冲液,2mM CaCl2 (pH 8.0)。
反应条件:反应缓冲液中37-56℃温育一小时
反应条件:反应缓冲液中37-56℃温育一小时
蛋白酶K产品列表
货号 | 产品描述 | 级别 | 包装 |
EBY0027I-100g | 蛋白酶K (源自林伯氏白色念球菌) Proteinase K, from Tritirachium album limber [39450-01-6] |
≥30 U/mg | 100g |
EBY0027I-500g | 500g | ||
EBY0027I-1kg | 1kg |
蛋白酶K参考文献资料
1. 【产品推荐】蛋白酶K (源自林伯氏白色念球菌) Proteinase K,from Tritirachium album limber
2. Kraus, E; et.al. Proteinase K from the Mold Tritirachium album limber, Specificity and Mode of Action. Z. Physiol. Chem., 357:939; 1976.
3. Jany,KD, et al. Amino Acid Sequence of Proteinase K from the Mold, Tritirachium album limber. Proteinase K; a Subtilisin-related Enzyme with Disulfide Bonds. FEBS Letter, 199,139.1986.
4. Sambrook, J., Fritsch, E.F. and Maniatis, T. (1989) Molecular Cloning: A Laboratory Manual, Volume 3, Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, B.16.
5. Sweeney, P.J. and Walker, J.M. (1993) Enzymes of molecular biology. In: Methods in Molecular Biology, Vol. 16, M.M. Burrell, ed., Humana Press, Inc., Totowa, NJ, 305.
2. Kraus, E; et.al. Proteinase K from the Mold Tritirachium album limber, Specificity and Mode of Action. Z. Physiol. Chem., 357:939; 1976.
3. Jany,KD, et al. Amino Acid Sequence of Proteinase K from the Mold, Tritirachium album limber. Proteinase K; a Subtilisin-related Enzyme with Disulfide Bonds. FEBS Letter, 199,139.1986.
4. Sambrook, J., Fritsch, E.F. and Maniatis, T. (1989) Molecular Cloning: A Laboratory Manual, Volume 3, Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, B.16.
5. Sweeney, P.J. and Walker, J.M. (1993) Enzymes of molecular biology. In: Methods in Molecular Biology, Vol. 16, M.M. Burrell, ed., Humana Press, Inc., Totowa, NJ, 305.
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