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Related Experiment Videos

A modular, positive selection bacterial artificial chromosome vector with multiple cloning sites.

E Frengen1, D Weichenhan, B Zhao

  • 1Department of Cancer Genetics, Roswell Park Cancer Institute, Buffalo, New York 14263, USA.

Genomics
|June 22, 1999
PubMed
Summary

A new bacterial artificial chromosome (BAC) vector, pBACe3.6, facilitates genomic research. This vector enables positive selection and DNA linearization, aiding large-insert library construction for sequencing and mapping complex genomes.

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Area of Science:

  • Genomics
  • Molecular Biology
  • Biotechnology

Background:

  • Construction of large-insert libraries is crucial for sequencing, mapping, and functional studies of complex genomes.
  • Existing bacterial artificial chromosome (BAC) vectors may have limitations in flexibility and functionality for these applications.

Purpose of the Study:

  • To develop a novel modular BAC vector, pBACe3.6, designed for enhanced construction of large-insert libraries.
  • To incorporate features for positive selection, DNA linearization, and vector modification (retrofitting).

Main Methods:

  • Construction of the pBACe3.6 vector with multiple cloning sites within the sacB gene for positive selection on sucrose.
  • Inclusion of a PI-SceI nuclease recognition site for insert-independent linearization.

Related Experiment Videos

  • Integration of an attTn7 sequence for Tn7-mediated retrofitting of BAC clones.

    • Main Results:

    • The pBACe3.6 vector allows positive selection of recombinant clones on sucrose-containing media.
    • PI-SceI nuclease enables linearization of recombinant DNA regardless of insert sequence characteristics.
    • The attTn7 site facilitates the insertion of desired elements into the vector portion of BAC clones.

    Conclusions:

    • The pBACe3.6 vector provides a versatile platform for constructing genomic libraries for complex genomes.
    • Its features enhance the efficiency of library construction, clone selection, and functional analysis.
    • pBACe3.6 is a valuable resource for large-scale genome mapping and sequencing projects.