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Related Experiment Videos

High efficiency vectors for cosmid microcloning and genomic analysis.

G A Evans1, K Lewis, B E Rothenberg

  • 1Molecular Genetics Laboratory, Salk Institute for Biological Studies, La Jolla, CA 92037.

Gene
|June 30, 1989
PubMed
Summary
This summary is machine-generated.

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New cosmid vectors enable efficient gene isolation and genomic mapping from minimal eukaryotic DNA. These tools facilitate high-quality genomic library construction, even with limited DNA samples.

Area of Science:

  • Molecular Biology
  • Genomics
  • Biotechnology

Background:

  • Limited DNA quantities pose challenges for traditional genomic studies.
  • Efficient gene isolation and mapping require specialized molecular tools.

Purpose of the Study:

  • To develop novel cosmid vectors for microcloning and genomic analysis.
  • To enable high-quality genomic library construction from scarce DNA samples.

Main Methods:

  • Construction of cosmid vectors with multiple cos sites, T3/T7 promoters, and selectable genes.
  • Incorporation of recognition sequences for oligodeoxyribonucleotides and unique restriction sites (NotI, SacII, SfiI).
  • Application in cloning non-size-selected DNA and generating end-specific probes for chromosome walking.

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Main Results:

  • Cosmid vectors facilitate efficient cloning and gene transfer into mammalian cells.
  • Vectors enable rapid restriction mapping and removal of DNA inserts.
  • Successful construction of high-quality genomic libraries from limited DNA, including sorted chromosomes.

Conclusions:

  • The developed cosmid vectors are highly effective for genomic research with minimal DNA input.
  • These tools advance gene isolation, mapping, and library construction in challenging sample conditions.