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Sequencing of double-stranded PCR products
1Department of Biological Sciences, State University of New York at Binghamton, 13902-6000, USA.
Molecular Biotechnology
|April 1, 1996
Summary
Direct DNA sequencing of polymerase chain reaction (PCR) products is achievable without cloning. Two methods, M13 single-stranded DNA cloning and Maxam-Gilbert sequencing, enable direct sequencing of amplified DNA fragments.
Area of Science:
- Molecular Biology
- Genetics
- Biochemistry
Background:
- Polymerase chain reaction (PCR) amplifies specific DNA fragments.
- Sequencing the amplified DNA is a crucial downstream application.
- Direct sequencing of PCR products avoids the need for traditional cloning steps.
Purpose of the Study:
- To describe and compare two protocols for direct sequencing of double-stranded PCR products.
- To evaluate the advantages and disadvantages of each sequencing method.
- To demonstrate DNA sequencing without intermediate cloning.
Main Methods:
- Protocol 1: Single-strand DNA preparation using M13 cloning followed by sequencing.
- Protocol 2: Maxam-Gilbert chemical sequencing after PCR amplification with a labeled primer.
- Comparative analysis of the two direct sequencing approaches.
Main Results:
- Both described protocols successfully yield DNA sequence data from PCR products.
- Direct sequencing eliminates the requirement for cloning the amplified DNA fragment.
- The study compares the efficiencies and limitations of each method.
Conclusions:
- Direct sequencing of PCR products is a viable alternative to cloning-based methods.
- The choice of protocol depends on specific experimental needs and resources.
- These methods streamline the process of obtaining DNA sequence information from PCR amplicons.