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Construction of a hybrid col E1 plasmid carrying the gene for bacteriophage lambda repressor
Nucleic Acids Research
|October 1, 1976
Summary
Researchers created a hybrid DNA molecule combining plasmid Col E1 and a lambda DNA fragment with the lambda repressor gene. This new plasmid functions as a versatile vector for both Eco R1 and Hind 111 DNA fragments.
Area of Science:
- Molecular Biology
- Genetic Engineering
- Recombinant DNA Technology
Background:
- Plasmid Col E1 is a common cloning vector.
- Lambda DNA contains essential genes, including the lambda repressor gene.
- Restriction enzymes like Eco R1 and Hind 111 are crucial for DNA manipulation.
Purpose of the Study:
- To construct a biologically active hybrid DNA molecule.
- To incorporate the lambda repressor gene into a plasmid vector.
- To assess the utility of the hybrid plasmid as a cloning vector for different restriction enzyme fragments.
Main Methods:
- Construction of a hybrid DNA molecule using plasmid Col E1 and an Eco R1 fragment of lambda DNA.
- Genetic demonstration of the presence of the lambda repressor gene.
- Identification of restriction sites for Hind 111 within the integrated fragment.
Main Results:
- A functional hybrid plasmid containing the lambda repressor gene was successfully constructed.
- The hybrid plasmid was genetically confirmed to carry the lambda repressor gene.
- Two Hind 111 restriction sites were identified in close proximity within the integrated lambda DNA fragment.
Conclusions:
- The constructed hybrid plasmid is biologically active and carries the lambda repressor gene.
- The hybrid plasmid serves as a versatile cloning vector.
- It can accommodate DNA fragments generated by both Eco R1 and Hind 111 restriction enzymes, expanding its applicability in genetic engineering.