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Sequencing of cloned DNA using bacteriophage lambda gt11 templates
1Div. of Molecular and Cellular Cardiovascular Biochemistry, Washington University School of Medicine, St. Louis, MO 63110.
Biotechniques
|July 1, 1989
Summary
Researchers developed a new method for directly sequencing bacteriophage lambda gt11 DNA. This technique bypasses subcloning, enabling faster analysis of recombinant DNA clones.
Area of Science:
- Molecular Biology
- Genetics
- Biotechnology
Background:
- Bacteriophage lambda gt11 is a widely used cloning vector in molecular biology.
- Traditional sequencing methods for lambda gt11 clones often require subcloning steps.
- Subcloning can be time-consuming and may introduce artifacts.
Purpose of the Study:
- To describe a novel procedure for direct DNA sequencing of lambda gt11 templates.
- To eliminate the need for subcloning prior to sequencing.
- To streamline the analysis of recombinant DNA inserts.
Main Methods:
- Isolation of recombinant bacteriophage lambda gt11 DNA templates.
- Direct application of the isolated DNA to dideoxynucleotide sequencing protocols.
- Utilizing established sequencing chemistries optimized for direct template analysis.
Main Results:
- Successful isolation and direct sequencing of lambda gt11 DNA templates.
- Obtained approximately 250-300 bases of sequence information directly from the template.
- Demonstrated the feasibility of bypassing subcloning steps.
Conclusions:
- The described procedure offers a more efficient approach to sequencing lambda gt11 clones.
- Direct sequencing significantly reduces the time and effort required for clone characterization.
- This method facilitates faster downstream analysis of genetic constructs.