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名称
核糖核酸酶A
英文别名
9001-99-4 | Nuclease, ribo- | L-HISTIDINE, N-beta-ALANYL- | 2-(3-aminopropanoylamino)-3-(1H-imidazol-5-yl)propanoic acid | 9001-73-4 | DL-(3-aminopropanoyl)histidine | 108333-82-0 | 2-(3-aminopropanamido)-3-(1H-imidazol-5-yl)propanoic acid | beta-Alanylhistidine | L-Histid
货号
R401532-10mg
包装规格
10mg
级别
EnzymoPure™
浓度
≥ 60 Kunitz units/mg Lyophilized Powder
产品介绍
基本介绍: 核糖核酸酶A(Ribonuclease A,RNase A)是经过蛋白质工程技术改造的源于牛胰腺(bovine pancreas)的非特异性核酸核酸内切酶,经过酵母表达、纯化获得。它不含有原核生物表达的细菌内毒素。在功能上,RNase A 是一种核糖核酸内切酶,可以水解核苷上5’-核糖与相邻的嘧啶核苷3’-核糖上的磷酸基团之间的磷酸二酯键,产生的2’,3’-环磷酸可水解为相应的3’-核苷磷酸盐。因而可在C 和U 核苷酸残基位置特异性地降解单链RNA。RNase A 十分稳定。RNase A 作用于单链RNA 时,效率最高。 活性最适 pH : 7.6 (activity range of 6-10) 最高活性温度:60 °C (activity range of 15-70 °C) 缓冲溶液: Storage buffer: 10 mM Tris-HCl (pH 8.0), 50% glycerol. Dilution buffer: 10 mM Tris-HCl (pH 8.0) 应用: 本产品广泛用于去除DNA 或蛋白质样品的RNA 污染。 重组RNaseA的优势 重组的RNaseA在氨基酸序列、分子结构和性能与牛胰提取的RNaseA是一样的,大规模量产的重组酶生产技术让产品在批次稳定性、高纯度及降低单位价格等方面都具有显著优势。 使用方法: 激活剂:钾和钠盐 RNase A在各种反应条件下都是活性的。在低盐浓度(0 -100mM NaCl)下,RNase A可作用于单链、双链RNA以及RNA和DNA杂交体,在0.3M NaCl以及更高浓度溶液中,RNase A仍然可以作用于单链RNA。 抑制剂:烷基化的His 12 和 His 119 RNase A对玻璃表面有很高的亲和力。 中性pH值和高浓度酶溶液会产生沉淀,DEPC、4 M GuSCN、β-巯基乙醇、重金属都会像RT33一样是RNase A的抑制剂。 为了从样品中去除酶,用旋转柱或几种苯酚/氯仿萃取物进行分离。 使用指南: 推荐的 RNase A使用浓度是1-100ug/ml 10μg /ml的 RNase A溶液在室温下1小时用于去除质粒中的RNA。 用100 ng/ml的RNase A溶液制备双链cDNA的“钝头”。
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Research chemical 10mg

Research chemical 10mg; supplied for laboratory research, analysis, inspection, and scientific procurement use; specifications: 10mg.

item number:R401532-10mg
Product model:10mg
level: 10mg
Lead Time:30days
sold 303 Items
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