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在色谱分析、有机合成和交叉偶联反应领域已被 1 篇同行评审文献引用。
肠激酶(Enterokinase, 轻链,EK)是重组表达的特异性识别Asp-Asp-Asp-Asp-Lys序列的丝氨酸蛋白酶,酶切Lys的C端肽键。它可以将带有这个识别序列的融合蛋白切开。用于生物制药、合成生物学、分子生物学重组融合蛋白质或多肽的研究。本产品是采用大肠杆菌重组表达后制备的高纯度、高特异性、高活性的牛肠激酶突变体。 物理形态: 冻干粉 ,含0.39mg Tris-HCl,0.01mg CaCl2 分子量: 26.2kDa. 溶解: 50μl 超纯水溶解即浓度1μg/μl pH值范围: 肠激酶在pH6.0-8.5活性最佳 酶切方法: -适用酶切缓冲溶液:50mmol Tris 或HEPES缓冲液;, pH值在6.0-8.5范围内 -融合蛋白样品按照1:500/1000蛋白酶和蛋白量使用,酶切反应蛋白浓度控制在0.2-0.5ug/ul, 4°C-25°C孵育12小时 注意事项:在 >2M Urea 、>250mM NaCl、>20mM β-ME、>0.1% SDS、>50mM imidazole或PBS等条件会影响酶切效果。
Enterokinase (light chain, EK) is a recombinantly expressed serine protease that specifically recognizes the sequence Asp-Asp-Asp-Asp-Lys and cleaves the peptide bond at the C‑terminus of Lys. It can cleave fusion proteins containing this recognition sequence. It is used for research on recombinant fusion proteins or peptides in biopharmaceuticals, synthetic biology, and molecular biology. This product is a high-purity, high-specificity, high-activity mutant of bovine enterokinase recombinantly expressed and prepared in Escherichia coli. Physical form: Lyophilized powder containing 0.39 mg Tris‑HCl and 0.01 mg CaCl₂ Molecular weight: 26.2 kDa Reconstitution: Reconstitute with 50 μL ultrapure water to a concentration of 1 μg/μL pH range: Enterokinase shows optimal activity at pH 6.0–8.5 Digestion method: Recommended digestion buffer: 50 mM Tris or HEPES buffer, pH 6.0–8.5 For fusion protein samples: use a protease-to-protein ratio of 1:500 to 1:1000, adjust protein concentration to 0.2–0.5 μg/μL, and incubate at 4 °C–25 °C for 12 hours Notes: Digestion efficiency may be affected under the following conditions: 2 M urea, > 250 mM NaCl, > 20 mM β‑ME, > 0.1% SDS, > 50 mM imidazole, or PBS.
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