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Related Experiment Videos

Specific-primer-directed DNA sequencing using automated fluorescence detection.

R J Kaiser1, S L MacKellar, R S Vinayak

  • 1Division of Biology, California Institute of Technology, Pasadena 91125.

Nucleic Acids Research
|August 11, 1989
PubMed
Summary
This summary is machine-generated.

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Specific-primer-directed sequencing, or gene walking, enables rapid DNA sequence analysis. This method efficiently closes sequence gaps, complementing random sequencing strategies for large-scale projects.

Area of Science:

  • Molecular Biology
  • Genomics
  • Biotechnology

Background:

  • Automated fluorescence-based DNA sequencing facilitates large-scale sequencing projects.
  • Directed sequencing strategies, like gene walking, are valuable for targeted DNA analysis.

Purpose of the Study:

  • To evaluate the specific-primer-directed sequencing approach using automated fluorescence detection.
  • To optimize primer synthesis and sequence analysis for a commercial DNA sequencer.

Main Methods:

  • Rapid chemical synthesis and purification of fluorophore-labeled primers.
  • Design of primer sequences compatible with commercial analysis software (ABI 370A DNA sequencer).
  • Automated DNA sequence analysis utilizing labeled primers.

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Main Results:

  • A set of four fluorophore-labeled primers synthesized within 24 hours.
  • Over 300 nucleotides of new sequence obtained per set in an additional 24 hours.
  • Current scale-up limitations for routine sequencing due to time and cost.

Conclusions:

  • Specific-primer-directed sequencing is effective for closing sequence gaps.
  • This method complements random sequencing strategies for comprehensive genome analysis.
  • The approach is best suited for targeted sequence completion rather than de novo sequencing.