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Related Experiment Videos

Techniques in mammalian genome mapping

L C Schalkwyk1, F Francis, H Lehrach

  • 1Imperial Cancer Research Fund, London, UK.

Current Opinion in Biotechnology
|February 1, 1995
PubMed
Summary
This summary is machine-generated.

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Genomic cloning is shifting towards Escherichia coli-based vectors for intermediate inserts, though yeast artificial chromosomes (YACs) remain crucial for global contig building and genome mapping efforts.

Area of Science:

  • Genomics
  • Molecular Biology
  • Bioinformatics

Background:

  • Genomic cloning relies on vectors to accommodate DNA inserts.
  • Yeast artificial chromosomes (YACs) have been widely used but present stability and handling challenges.
  • Escherichia coli-based vectors offer intermediate insert capacities, addressing some YAC limitations.

Purpose of the Study:

  • To evaluate the role of intermediate-capacity genomic cloning vectors.
  • To compare the utility of E. coli-based vectors with YACs.
  • To discuss the future of genome mapping and gene discovery.

Main Methods:

  • Review of current genomic cloning vector technologies.
  • Analysis of YAC stability and DNA handling issues.
  • Assessment of E. coli-based vector applications (bacteriophage P1, BACs).

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Main Results:

  • E. coli-based vectors are increasingly adopted for intermediate genomic inserts.
  • YACs, despite challenges, are essential for large-scale contig construction.
  • Ongoing projects aim to create YAC contigs for human and mouse genomes.

Conclusions:

  • YACs remain the most practical system for global contig building.
  • Future efforts will integrate YAC contigs with genetic maps for gene catalog compilation.
  • The era of large-scale gene discovery is approaching its end.