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Timeline: Z-DNA: the long road to biological function.

Alexander Rich1, Shuguang Zhang

  • 1Department of Biology, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Room 68-233, Cambridge, Massachusetts 02139, USA.

Nature Reviews. Genetics
|July 3, 2003
PubMed
Summary

The discovery of left-handed Z-DNA, initially puzzling, is now linked to biological roles. Specific proteins binding Z-DNA are involved in poxvirus pathology, revealing its significance.

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Area of Science:

  • Molecular Biology
  • Genetics
  • Virology

Background:

  • The existence of left-handed Z-DNA presented a biological puzzle due to its seemingly unnecessary nature.
  • Z-DNA formation is associated with negative supercoiling during transcription, suggesting transient conformational changes.

Observation:

  • Few research groups investigated the biological functions of Z-DNA.
  • Certain protein families exhibit high-affinity and specific binding to Z-DNA structures.

Findings:

  • The specific binding of proteins to Z-DNA indicates a crucial biological role for this DNA conformation.
  • Recent research connects Z-DNA-binding proteins to the pathogenesis of poxviruses.

Implications:

  • Understanding Z-DNA's role can illuminate mechanisms of viral diseases.
  • This research opens new avenues for studying DNA structure-function relationships and therapeutic targets.

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