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First combine template RNA, primer, dNTP mix, and nuclease-free water in a PCR tube. Then, add an RNase inhibitor and reverse transcriptase to the PCR tube. Next, place the PCR tube into a thermal cycler for one cycle wherein annealing, extending, and inactivating of reverse transcriptase occurs.
The outer primers(F3 and B3) anneal to the template strand and help the reaction to proceed. As in the case of RT-PCR, the RT-LAMP procedure starts by making DNA from the sample RNA. This conversion is made by a reverse transcriptase, an enzyme derived from retroviruses capable of making such a conversion. [15]
Template-switching polymerase chain reaction (TS-PCR) is a method of reverse transcription and polymerase chain reaction (PCR) amplification that relies on a natural PCR primer sequence at the polyadenylation site, also known as the poly(A) tail, and adds a second primer through the activity of murine leukemia virus reverse transcriptase. [1]
A reverse transcriptase (RT) is an enzyme used to convert RNA genome to DNA, a process termed reverse transcription.Reverse transcriptases are used by viruses such as HIV and hepatitis B to replicate their genomes, by retrotransposon mobile genetic elements to proliferate within the host genome, and by eukaryotic cells to extend the telomeres at the ends of their linear chromosomes.
The protocols for 5' or 3' RACES differ slightly. 5' RACE-PCR begins using mRNA as a template for a first round of cDNA synthesis (or reverse transcription) reaction using an anti-sense (reverse) oligonucleotide primer that recognizes a known sequence in the middle of the gene of interest; the primer is called a gene specific primer (GSP). The ...
A 3’ adaptor template (AT) containing a 3’ dCTP is added to the reaction, promoting base pairing between the cDNA 3’ G overhang and the 3’C base of the AT and subsequent extension by BoMoC. When using RNA as the input template, addition of RNase A and RNase H is needed to degrade remaining RNA, leaving only the cDNA template. [1]
In order to robustly detect and quantify gene expression from small amounts of RNA, amplification of the gene transcript is necessary. The polymerase chain reaction (PCR) is a common method for amplifying DNA; for RNA-based PCR the RNA sample is first reverse-transcribed to complementary DNA (cDNA) with reverse transcriptase.
At the lower temperatures of a reverse transcription unspecific hybridisation of primers to wrong sequences can occur, as well as unwanted secondary structures in the DNA template, which can lead to unwanted PCR products and less desired PCR products. The AMV reverse transcriptase may be used up to 70 °C. [66]
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