楼上的两位兄弟或者哪位XDJM能找到这些文献吗,我想看看,近来对此问题觉得非常有趣。
此外:piscean wrote
Tth DNA Polymerase 在Mn 2+存在时显示RTase活性。但此酶合成的cDNA平均长度只1-2Kb,而且催化反应的最适温度较高,不合适用oligo(dT)或random Primer
虽然oligo(dT)或random Primer不适合,但是据说提RNA时混合一些小片段的DNA,他们仍然可能作为引物的。而且1-2kb长度足够可以作为PCR模板,因为我的PCR产物才100bp上下
对于TAQ这是最常用的酶 作者: 微笑的海豚 时间: 2011-9-20 17:02
此外:piscean wrote
Tth DNA Polymerase 在Mn 2+存在时显示RTase活性。但此酶合成的cDNA平均长度只1-2Kb,而且催化反应的最适温度较高,不合适用oligo(dT)或random Primer
虽然oligo(dT)或random Primer不适合,但是据说提RNA时混合一些小片段的DNA,他们仍然可能作为引物的。而且1-2kb长度足够可以作为PCR模板,因为我的PCR产物才100bp上下
对于TAQ这是最常用的酶
EVIDENCES
找到相关文献,Taq Polymerase在68度左右确实具有RTase活性
下面是文献,请大家继续探讨
1.Nucleic Acids Res. 1989 Oct 25;17(20):8387-8.
Reverse transcription of mRNA by Thermus aquaticus DNA polymerase.
Jones MD, Foulkes NS.
网上无全文摘要,请自查原文期刊,或者求助管藏
2.J Biochemistry and Mol Biol 2002; 35(2):248-250
A simple method for elimination of false positive results in RT-PCR.
Martel F, Grundemann D, Schomig E.
关于Tth和Mn离子有关,也有文献
Biochemistry 1991. 30(31):7661-6
Reserse transcription and DNA amplification by a Thermus thermophilus DNA polymerase.
Myers TW and Gelfand DH. 作者: 花裙子 时间: 2011-9-20 17:03
1、Methods Enzymol. 1993; 218: 413-9.
Reverse transcription of mRNA by Thermus aquaticus DNA polymerase followed by polymerase chain reaction amplification.
Jones MD.
2、Anal Biochem. 1990 Nov 1; 190(2): 292-6. Related Articles
Amplification, detection, and automated sequencing of gibbon interleukin-2 mRNA by Thermus aquaticus DNA polymerase reverse transcription and polymerase chain reaction.
Shaffer AL, Wojnar W, Nelson W.
Reverse transcription-polymerase chain reaction (RT-PCR) is a gene expression assay by which messenger RNA (mRNA) production can be measured. This technique involves three steps: isolation of RNA from cells or tissues, the creation of a DNA copy of the desired message (cDNA) by viral reverse transcriptase enzymes (RT), and amplification of this DNA segment by the polymerase chain reaction (PCR) for subsequent quantitation and analysis. Here we describe a one-enzyme, one-step method combining the RT and PCR steps of conventional RT-PCR by exploiting the recently documented RT properties of Taq polymerase, the thermostable enzyme used for PCR amplification of DNA. ...... 作者: 绿茶公子 时间: 2011-9-20 17:06