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Related Experiment Videos

Conserved and non-conserved features among the yeast Ty elements.

R Stucka1, J Hauber, H Feldmann

  • 1Institut für Physiologische Chemie, Physikalische Biochemie und Zellbiologie, Universität München, Federal Republic of Germany.

Current Genetics
|January 1, 1986
PubMed
Summary
This summary is machine-generated.

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Researchers identified a unique yeast Ty element with unusual flanking sequences and associated tRNA genes. Comparative analysis revealed conserved sequence motifs and structural similarities to retroviral proteins.

Area of Science:

  • Molecular Biology
  • Genetics
  • Yeast Biology

Background:

  • Transposable elements, such as Ty elements in yeast, are mobile genetic sequences.
  • Understanding their structure and function is crucial for comprehending genome dynamics.
  • Previous studies have characterized various Ty elements, but unique variants offer new insights.

Purpose of the Study:

  • To isolate and characterize a novel Ty element from a yeast cosmid library.
  • To investigate the unusual structural features of this Ty element, including flanking sequences and associated genes.
  • To perform a comparative sequence analysis of Ty elements and related mobile/retroviral elements.

Main Methods:

  • Isolation and characterization of a Ty element using yeast cosmid library.

Related Experiment Videos

  • Sequence analysis to identify flanking elements (delta elements) and associated genes (tRNA(Glu3), tRNA(Cys)).
  • Comparative sequence analysis of multiple Ty elements, focusing on conserved motifs and putative protein domains.
  • Homology searches comparing Ty element proteins with those of other transposable elements and retroviral proviruses.

    • Main Results:

    • A unique Ty element was isolated, characterized by flanking non-homologous delta elements and a singular associated delta element.
    • The Ty element is adjacent to tRNA(Glu3) and tRNA(Cys) genes in opposite orientations.
    • Comparative analysis revealed highly conserved sequence motifs at the boundaries of putative Ty protein domains.
    • Significant amino acid homologies were found between Ty element proteins, other transposable elements, and retroviral proviruses.

    Conclusions:

    • The identified Ty element possesses unique structural characteristics, including novel flanking sequences and gene associations.
    • Conserved sequence motifs within Ty elements suggest functional importance for their protein domains.
    • The structural resemblance to retroviral proteins supports evolutionary links and shared mechanisms.