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Related Experiment Videos

Yeast artificial chromosome vectors for efficient clone manipulation and mapping.

J H Shero1, M K McCormick, S E Antonarakis

  • 1Department of Molecular Biology and Genetics, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205.

Genomics
|June 1, 1991
PubMed
Summary

This study introduces enhanced yeast artificial chromosome (YAC) vectors for improved DNA cloning and characterization. These new vectors facilitate efficient manipulation and mapping of large DNA inserts, advancing molecular biology research.

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Area of Science:

  • Molecular Biology
  • Genomics
  • Biotechnology

Background:

  • Yeast artificial chromosomes (YACs) enable cloning of large DNA fragments (hundreds of kilobases).
  • Existing YAC technologies require improvements for efficient clone analysis and manipulation.

Purpose of the Study:

  • To develop advanced YAC vectors for enhanced clone characterization, manipulation, and mapping.
  • To improve the utility of YAC technology for large-scale DNA cloning.

Main Methods:

  • Designed YAC vectors with a versatile polylinker containing multiple unique restriction sites (EcoRI, BglII, NotI, EagI, SacII, SalI, NruI, NheI, ClaI).
  • Incorporated T7 bacteriophage promoters for efficient riboprobe generation from DNA ends.
  • Constructed separate centric and acentric vector arms for dual-end recovery in E. coli.

Related Experiment Videos

  • Integrated the yeast SUP11 gene for visual monitoring of YAC stability and copy number.

    • Main Results:

    • The novel YAC vectors facilitate efficient cloning and characterization of large exogenous DNA inserts.
    • The design allows for straightforward recovery of both YAC insert ends in E. coli.
    • Visual monitoring of YAC stability and copy number is enabled by the SUP11 gene.

    Conclusions:

    • The developed YAC vector system significantly enhances the efficiency and utility of large-scale DNA cloning.
    • This technology provides a robust tool for genomic research, clone manipulation, and mapping.
    • The vector design supports improved monitoring of YAC integrity and abundance.