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Related Experiment Videos

Fluorometric assay for DNA polymerases and reverse transcriptase

M Seville1, A B West, M G Cull

  • 1Enzyco Inc., Denver, CO 80206, USA.

Biotechniques
|October 1, 1996
PubMed
Summary

A new fluorometric assay using Pico-Green accurately measures DNA replication enzyme activity. This quick, inexpensive method is comparable to isotopic assays and significantly reduces assay time.

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Area of Science:

  • Biochemistry
  • Molecular Biology
  • Enzymology

Background:

  • Enzyme activity assays are crucial for understanding DNA replication.
  • Traditional isotopic assays can be time-consuming and costly.
  • Developing rapid and cost-effective methods is essential for high-throughput screening.

Purpose of the Study:

  • To develop and validate a novel fluorometric assay for measuring DNA replication enzyme activity.
  • To compare the performance of the fluorometric assay with conventional isotopic methods.
  • To assess the applicability of the assay for different replication systems.

Main Methods:

  • Utilized Pico-Green dye for sensitive DNA detection.
  • Employed a 96-well plate format for streamlined reaction setup.
  • Used a fluorescence plate reader for rapid data acquisition.
  • Tested with E. coli DNA polymerase III holoenzyme and HIV reverse transcriptase.

Main Results:

  • The fluorometric assay accurately quantifies DNA replication extent.
  • Demonstrated comparable results to traditional isotopic assays.
  • Significantly reduced the time required for activity measurements.
  • Successfully applied to both bacterial and viral replication enzymes.

Conclusions:

  • The Pico-Green-based fluorometric assay offers a fast, easy, and inexpensive alternative for measuring DNA replication enzyme activity.
  • This method is suitable for high-throughput screening and research applications.
  • The assay provides reliable and accurate data, facilitating efficient enzyme characterization.

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