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Mutants partially defective in excision repair at five autosomal loci in Drosophila melanogaster

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Abstract

Primary cell cultures derived from mutants in seventeen different genes were analyzed for their ability to excise pyrimidine dimers from DNA. Five of these mutagen-sensitive mutants [mus(2)205A1, mus(3)302D1, mus(3) 304D3, mus(3)306D1, mus(3)308D2] display a significantly reduced excision capacity relative to control cultures. In addition, two of the five [mus(3)306D1, mus(3)308D2] are defective in the accumulation of single-strand breaks normally seen after ultraviolet irradiation. This study, therefore, brings the total number of Drosophila mutants known to be defective in excision repair to seven. The results are discussed relative to other genetic and biochemical properties of these mutants.

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Abbreviations

UV:

ultraviolet irradiation

MMS:

methyl methanesulfonate

HN2:

nitrogen mustard (mechlorethamine)

References

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This work is dedicated to Professor W. Beermann whose own contributions were instrumental in focusing a modern analysis of the eukaryotic genome on the diptera. Those of us who benefitted so much from his personal guidance recognize that we did so as a result of some sacrifice on his part. One of Boyd's contemporaries in Tübingen once remarked: “It's terrifying to think what Professor Beermann could do if he were in the lab full time.”

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Boyd, J.B., Harris, P.V. Mutants partially defective in excision repair at five autosomal loci in Drosophila melanogaster . Chromosoma 82, 249–257 (1981). https://doi.org/10.1007/BF00286109

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Keywords

  • Cell Culture
  • Developmental Biology
  • Pyrimidine
  • Primary Cell
  • Ultraviolet Irradiation