Thermo Scientific Maxima H Minus 第一链 cDNA 合成试剂盒是高效合成第一链 cDNA 的完整系统了解更多信息
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反应次数
K1682
Kit with dsDNase
100 次反应
K1651
Kit only
20 次反应
K1652
Kit only
100 次反应
K1681
Kit with dsDNase
20 次反应
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货号 K1682
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4,443.00
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Ends: 31-Dec-2025
6,347.00
共减 1,904.00 (30%)
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包括:
Kit with dsDNase
反应次数:
100 次反应
请求批量或定制报价
价格(CNY)
4,443.00
飞享价
Ends: 31-Dec-2025
6,347.00
共减 1,904.00 (30%)
Each
添加至购物车
Thermo Scientific Maxima H Minus 第一链 cDNA 合成试剂盒是高效合成第一链 cDNA 的完整系统。该试剂盒采用 Maxima H Minus 反转录酶 (RT),这是 M-MuLV RT 经体外进化而得到的一种高级酶。该酶在 M-MuLV RT 衍生物中具有最高热稳定性,且缺乏 RNase H 活性。Maxima H Minus 第一链 cDNA 合成试剂盒可在高温下合成高达 20 kb 的长链 cDNA(最高 65°C),可替代其他系统生产全长 cDNA。由于合成效率高,反应可在30分钟内完成。
• Maxima H Minus 酶混合物 • dsDNase • 10X dsDNase 缓冲液 • Oligo(dT)18 和随机六聚体引物 • 5X RT 缓冲液 • dNTP 混合物 • 无核酸酶水
储存在 –20°C 下。
常见问题解答 (FAQ)
How can I inactivate Thermo Scientific dsDNase?
dsDNase can be inactivated by incubating the sample at 55°C for 5 min in the presence of 10 mM DTT.
When should I choose regular RevertAid RT or Maxima RT vs. RevertAid H-minus RT or Maxima H-minus RT?
It is generally beneficial to minimize RNase H activity when aiming to produce long transcripts for cDNA cloning. RNase H degrades RNA from RNA-DNA duplexes, which can result in truncated cDNA during reverse transcription of long mRNA. It is also recommended to use RNase H-minus RTs for template-independent addition of C nucleotides. In contrast, reverse transcriptases with intrinsic RNase H activity are often favored in qPCR applications.
Do Thermo Scientific reverse transcriptases (RevertAid RT, RevertAid H-minus RT, Maxima RT, and Maxima H-minus RT) possess terminal deoxynucleotidyl (TdT) activity?
All Thermo Scientific reverse transcriptases possess intrinsic TdT activity although at varying degrees depending upon the reaction conditions. For addition of template-independent C nucleotides (as for SMART and RACE experiments), this specific TdT activity can be induced by Mn2+. We would recommend Maxima H- or RevertAid H- minus RTs for this purpose.
Does dsDNase cleave ssDNA?
No, dsDNase cleaves only double-stranded DNA. However, if ssDNA forms double-stranded structures, it will act as a target for dsDNase. Because of this, long and complex ssDNA may be partially degraded. Therefore we recommend additional dsDNase inactivation step for RT-PCR amplification of targets 3 kb or longer. The inactivation step should be performed by 5 min incubation at 55 degrees C in the presence of 10 mM DTT.
Can dsDNase be added directly to a reverse transcription reaction to remove genomic DNA?
No. RT reaction composition inhibits dsDNase activity, and genomic DNA removal may be incomplete.