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Related Experiment Videos

Micro-colony array based high throughput platform for enzyme library screening.

Brigitte Pohn1, Jochen Gerlach, Marcel Scheideler

  • 1Applied Biocatalysis Research Centre, Petersgasse 14, 8010 Graz, Austria.

Journal of Biotechnology
|December 19, 2006
PubMed
Summary
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A new high-throughput screening method analyzes thousands of enzyme variants in micro-colonies. This cost-effective technology overcomes screening bottlenecks for biocatalyst discovery and optimization.

Area of Science:

  • Biotechnology
  • Enzyme Engineering
  • Industrial Microbiology

Background:

  • Enzymes are crucial for chemical synthesis, but suitable biocatalysts are often scarce.
  • Screening microbial libraries is key to finding new enzymes, but current methods face a "screening bottleneck" due to low throughput.
  • Efficient screening is needed to explore enzyme diversity from natural and artificial sources.

Purpose of the Study:

  • To develop an efficient, cost-effective, high-throughput screening method for large enzyme libraries at the micro-colony level.
  • To enable rapid analysis of diverse enzyme variants under various conditions.

Main Methods:

  • Development of a system combining ordered high-density micro-colony arrays with optical sensor technology.
  • Implementation of automated image analysis for simultaneous monitoring of enzyme activities.

Related Experiment Videos

  • Incorporation of a replica option for analyzing clones under different external conditions.

    • Main Results:

    • The system enables simultaneous monitoring of enzyme activities in up to 7000 micro-colonies on a micro-titer plate-sized filter.
    • The method provides reliable enzyme activity measurements within single micro-colonies.
    • Activity differences in the range of 10-20% could be discriminated, as verified using esterases.

    Conclusions:

    • The developed method effectively overcomes the screening bottleneck in enzyme discovery.
    • This technology facilitates rapid and cost-effective screening of large enzyme libraries for industrial applications.
    • The system supports the identification and optimization of novel biocatalysts.