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From a short amino acidic sequence to the complete gene
B Miñambres1, E R Olivera, B García
1Departamento de Bioquímica y Biología Molecular, Universidad de León, Spain.
Biochemical and Biophysical Research Communications
|June 2, 2000
Summary
This study presents a novel strategy for isolating genes with high GC content using degenerate oligonucleotide probes and PCR amplification. The method enables efficient gene cloning from various genomic libraries, including bacteriophage and plasmid DNA.
Area of Science:
- Molecular Biology
- Genetics
- Biotechnology
Background:
- Isolating genes, especially those with high GC content, presents a significant challenge in molecular biology.
- Existing methods may lack efficiency or broad applicability across different genetic systems.
Purpose of the Study:
- To develop and report a robust strategy for the isolation and cloning of specific genes, particularly those with high GC content.
- To provide a versatile method applicable to various genomic library types.
Main Methods:
- Utilizing degenerate oligonucleotide probes designed from protein amino-terminus sequences for Polymerase Chain Reaction (PCR) amplification.
- Employing a two-step cloning approach using internal or consensus sequences, or sequences adjacent to disrupting elements.
Main Results:
- Successfully obtained DNA fragments containing target genes via PCR amplification.
- Demonstrated successful cloning of several genes from diverse biological systems using the described two-step strategy.
- The method proved effective for bacteriophage, plasmid, and cosmid genomic libraries.
Conclusions:
- The reported strategy offers an effective solution for isolating genes with high GC content.
- This versatile gene cloning technique is applicable to a wide range of genomic libraries and biological systems.