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Related Experiment Videos

Hammerhead ribozyme structure probed by cell extracts

J Y Wang1, L Qiu, K Drlica

  • 1Public Health Research Institute, New York, NY 10016, USA.

Gene
|November 28, 1996
PubMed
Summary
This summary is machine-generated.

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Hammerhead ribozymes

Area of Science:

  • Molecular Biology
  • Biochemistry
  • RNA Structure

Background:

  • Hammerhead ribozymes are catalytic RNA molecules.
  • Understanding their structure is key to their function and stability.

Purpose of the Study:

  • To investigate the structural integrity of hammerhead ribozymes.
  • To determine their susceptibility to degradation by cellular nucleases.

Main Methods:

  • Incubation of ribozymes with soluble extracts from Escherichia coli.
  • Identification of cleavage sites using primer extension analysis.

Main Results:

  • The 3'-substrate-binding region showed the highest sensitivity to cleavage.
  • The catalytic domain was more resistant, with some cleavage at specific strained positions.

Related Experiment Videos

  • Altering the substrate-binding domain did not affect catalytic domain cleavage patterns.

    • Conclusions:

    • Hammerhead ribozymes possess structurally independent, asymmetrically arranged domains in solution.
    • The 3'-substrate-binding region is a vulnerable site for nucleolytic attack.