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UV-inducible transcripts in Saccharomyces cerevisiae.

M Rolfe1

  • 1Genetics Division, National Institute for Medical Research, London, Great Britain.

Current Genetics
|January 1, 1985
PubMed
Summary

Researchers identified four DNA sequences in Saccharomyces cerevisiae that increase after UV-irradiation. Three sequences share homology, while the fourth is distinct, all producing a 4.0 kb RNA transcript.

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Area of Science:

  • Molecular biology
  • Yeast genetics
  • DNA-RNA interactions

Background:

  • UV-irradiation induces DNA damage and cellular responses in Saccharomyces cerevisiae.
  • Gene expression changes are critical for DNA repair and survival.
  • Identifying specific UV-inducible transcripts aids in understanding cellular stress responses.

Purpose of the Study:

  • To identify and characterize DNA sequences in yeast that correspond to RNA transcripts upregulated by UV irradiation.
  • To investigate the homology and relationships among these identified DNA sequences.
  • To analyze the size of the corresponding RNA transcripts.

Main Methods:

  • Differential colony hybridization was employed to screen for DNA sequences.
  • Hybridization assays were used to determine sequence homology and identify genomic DNA fragments.
  • Northern blotting or similar techniques were implied for RNA transcript size determination.

Main Results:

  • Four distinct DNA sequences in Saccharomyces cerevisiae were identified.
  • Three of these sequences exhibited sequence homology and hybridized to common genomic DNA fragments.
  • The fourth sequence was distinct, but all four hybridized to a similar RNA transcript of approximately 4.0 kb.

Conclusions:

  • UV-irradiation leads to the upregulation of specific gene sets in yeast.
  • The identified DNA sequences represent potential targets for studying UV-induced gene expression.
  • Further investigation into the relationships and protein products of these sequences is warranted.

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