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Related Experiment Videos

Protein evolution by molecular breeding.

J Minshull1, W P Stemmer

  • 1Maxygen Incorporated, 515 Galveston Drive, Redwood City, CA 94063, USA. jeremy_minshull@maxygen.com

Current Opinion in Chemical Biology
|June 9, 1999
PubMed
Summary
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Molecular breeding rapidly modifies genes in the lab. In vitro recombination of natural diversity creates novel chimeric proteins with unique functions, enabling discovery of new biocatalysts.

Area of Science:

  • Molecular biology
  • Biotechnology
  • Protein engineering

Background:

  • Natural evolution has informed laboratory techniques for genetic modification.
  • Molecular breeding aims to rapidly alter subgenomic sequences and individual genes.
  • Recent advancements focus on in vitro manipulation of natural genetic diversity.

Purpose of the Study:

  • To describe the process of in vitro permutation of natural diversity for protein engineering.
  • To highlight the creation of chimeric protein libraries through homologous recombination.
  • To emphasize the development of screening methods for identifying novel biocatalysts.

Main Methods:

  • Utilizing homologous recombination to combine multiple related DNA sequences.
  • Generating high-quality libraries of chimeric sequences.

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  • Developing advanced screening techniques for functional protein identification.

    • Main Results:

    • Successfully produced chimeric protein libraries with significantly altered functions compared to parent proteins.
    • Demonstrated the effectiveness of homologous recombination in creating sequence diversity.
    • Enabled the screening of these libraries for novel biocatalyst discovery.

    Conclusions:

    • In vitro permutation of natural diversity is a powerful approach in molecular breeding.
    • Homologous recombination facilitates the generation of diverse protein variants.
    • Advanced screening methods are crucial for harnessing the potential of these libraries to discover novel biocatalysts.