| Literature DB >> 3129200 |
A Ruhland1, M Brendel, R H Haynes.
Abstract
In order to study resistance to DNA damaging agents, yeast DNA segments conferring hyperresistance in this organism to such genotoxic agents were selected for among yeast cells transformed by a yeast genome library based on the multi-copy vector plasmid YEp13. Genetic variants hyperresistant to 4-nitroquinoline-N-oxide, formaldehyde, and alkylating agents were isolated and the respective hyperresistance determinants shown to co-segregate with the vector plasmid. Phenotypical characterization indicated different degrees of resistance, few cases of cross-resistance and differing structural stability of the cloned DNA. By transfer to E. coli and subsequent retransformation of yeast a number of plasmids was shown to stably carry the genetic information for hyperresistance.Entities:
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Year: 1986 PMID: 3129200 DOI: 10.1007/bf00420609
Source DB: PubMed Journal: Curr Genet ISSN: 0172-8083 Impact factor: 3.886