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Related Experiment Videos

Precise branch point mapping and quantification of splicing intermediates

J Vogel1, W R Hess, T Börner

  • 1Department of Biology, Humboldt University, Chausseestrasse 117, 10115 Berlin, Germany. joerg=vogel@rz.hu-berlin.de

Nucleic Acids Research
|May 15, 1997
PubMed
Summary
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Researchers investigated lariat intermediates in group II introns using RT-PCR. A new method precisely locates branch points and quantifies splicing intermediates, aiding the study of RNA splicing.

Area of Science:

  • Molecular Biology
  • RNA Splicing Mechanisms
  • Intron Biochemistry

Background:

  • Group II introns are mobile genetic elements that undergo self-splicing.
  • Lariat intermediates are crucial but transient structures in the splicing pathway.
  • Understanding branch point location is key to elucidating splicing fidelity.

Purpose of the Study:

  • To investigate lariat intermediates of group II introns.
  • To develop a precise method for determining branch point locations.
  • To establish a tool for quantifying splicing intermediates.

Main Methods:

  • Reverse Transcription Polymerase Chain Reaction (RT-PCR) was employed.
  • Evaluation of different reverse transcriptases for reading through branched nucleotides.

Related Experiment Videos

  • Development of a novel method for branch point localization.
  • Application of antisense transcripts in RNase Protection Assays (RPAs) for quantification.

    • Main Results:

    • Several reverse transcriptases demonstrated the ability to read through branched nucleotides.
    • A new method was successfully established for precise branch point localization within introns.
    • Antisense transcripts coupled with RPAs provided a viable tool for quantifying splicing intermediates.

    Conclusions:

    • The developed method offers precise branch point information for group II introns.
    • The approach facilitates the quantification of essential splicing intermediates.
    • This methodology holds potential for studying other self-splicing introns and nuclear pre-mRNA introns.