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Related Experiment Videos

Sequence analysis of the rat jun-D gene

T Yamada1, S Nakao, S Osada

  • 1Department of Environmental Biochemistry, Faculty of Pharmaceutical Sciences, Osaka University, Suita, Japan.

Gene
|February 14, 1995
PubMed
Summary

Researchers isolated a rat jun-D gene, finding it highly similar to mouse jun-D. Despite variations in DNA sequences, key functional regions like DNA-binding were conserved across species.

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Area of Science:

  • Genomics
  • Molecular Biology
  • Comparative Biology

Background:

  • The jun-D gene is a member of the Activator Protein-1 (AP-1) transcription factor family.
  • AP-1 proteins play crucial roles in cellular processes including proliferation, differentiation, and apoptosis.
  • Understanding the evolutionary conservation of jun-D across species can provide insights into its fundamental biological functions.

Purpose of the Study:

  • To isolate and characterize the rat jun-D gene.
  • To compare the sequence of rat jun-D with its counterparts in other species (mouse, human, chicken).
  • To investigate the conservation of functional domains within the jun-D protein.

Main Methods:

  • Isolation of a rat jun-D genomic clone using a lambda EMBL3 library from rat liver.
  • DNA sequence analysis of the isolated clone.
  • Comparative sequence analysis with known jun-D sequences from mouse, human, and chicken.

Main Results:

  • A rat jun-D genomic clone was successfully isolated.
  • Sequence analysis revealed high similarity between rat and mouse jun-D.
  • Rat jun-D showed lower sequence similarity to human and chicken jun-D.
  • The trans-activation and DNA-binding domains of jun-D were found to be well conserved across all four species studied.

Conclusions:

  • The rat jun-D gene shares significant sequence homology with mouse jun-D, suggesting close evolutionary relationship.
  • Despite interspecies sequence variations, critical functional domains of jun-D exhibit strong evolutionary conservation, implying conserved biological roles.

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