Invitrogen SuperScript® III 反转

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北京智杰方远科技有限公司
15810200961 010-82897201
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Last Updated 2025-08-12 15:46

Invitrogen SuperScript® III 反转


品名 货号 品牌 规格 报价 折后价
反转录酶III SuperScript® III Reverse Transcriptase 18080-044 Invitrogen 10,000 units ¥3,745 ¥2,650


SuperScript® III 反转录酶(RT) (SuperScript® III Reverse Transcriptase (RT)) 是SuperScript® II RT 的专有突变体,在50°C 具有活性,半衰期为220 分钟,使用基因特异性引物(GSP) 提高特异性,在所有RT 中cDNA 产量最高。如果要进行特定基因的RT-PCR 或从总RNA 或poly (A)+ RNA 样品生成cDNA,该产品十分理想。和SuperScript® II 一样,它可以从单链RNA、DNA 或RNA:DNA 杂合体合成互补DNA 链。通过引入点突变对SuperScript® III RT 进行遗传改造,这些点突变可以增加半衰期、降低RNase 活性并增加热稳定性。进行结构修饰后:
  • 50°C 时半衰期为220 分钟,获得最高的cDNA 产量(图1)
  • RNase H 活性降低,获得更多全长cDNA
  • 在50°C 有最大活性,用GSP 增加特异性
  • 能增加RT 单位而不抑制后续的PCR

应用:第一链cDNA 合成、阵列标记、cDNA 文库、RT-PCR、引物延伸和3´ 和5´ RACE。

来源:纯化自表达M-MLV 的pol 基因的大肠杆菌(1,2),通过突变增加了热稳定性和半衰期,降低了RNase H 活性。

性能和质量测试:SDS-PAGE 纯度;脱氧核糖核酸内切酶、脱氧核糖核酸外切酶和核糖核酸酶分析(图2)及cDNA 产物的产量和长度。

单位定义:一个单位的SuperScript® III RT 是在37°C 的反应体系中,使用poly(A)•oligo(dT)12-18 作为模板•引物,在10 分钟内将1 纳摩尔脱氧核糖核苷酸掺入酸沉淀材料所需的酶量(3)。

单位反应条件:50 mM Tris-HCl (pH 8.3)、40 mM KCl、6 mM MgCl 2、1 mM DTT。0.5 更看更多mM [ 3 H]dTTP、0.1 mM poly(A)、0.1 mM oligo(dT)12-18、0.1 mg/ml BSA 和酶,共50 µl,温度37°C,时间10 分钟。

详细说明

常用规格


Optimal Reaction Temperature: 50° C
Final Product Size(s): 12.3 kb or less
Ribonuclease H Activity: Reduced
Concentration: 200 units/µl
Form: Frozen
Format: Tube(s)
Template: ssRNA
Sensitivity: Medium
Product Size: 10,000 units
Enzyme Function: RNA dependent DNA Polymerase
Number of Reactions: 50 Reactions
Regulatory Statement: For Research Use Only. Not for any animal or human therapeutic or diagnostic use.

内容和储存

SuperScript® III Reverse Transcriptase is supplied with a vial of 5X first-strand buffer [250 mM Tris-HCl (pH 8.3), 375 mM KCl, 15 mM MgCl2], and a vial of 100 mM DTT.
Store at -20°C. Guaranteed stable for 6 months when properly stored.
Company Name 北京智杰方远科技有限公司
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Business Scope 进口胎牛血清,美国GIBCO,德国PAN,以色列BI,澳大利亚Ausgene-X,德国Cegrogen,美国GEMINI,美国Hyclone,MP Bio,日本同仁,TAKARA,Biolog微生物鉴定板,Borer清洗产品,台湾旭基
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