title: Induction of DNA double-strand breaks by X-rays in a radiosensitive strain of the yeast Saccharomyces cerevisiae.
abstract: Sedimentation profiles for chromosomal DNA from unirradiated and X-irradiated yeast cells of wild type and rad 52 strains are presented. These profiles indicate that, whereas wild type strains rejoin DNA double-strand breaks, rad 52 strains apparently do not. These data suggest that the rad 52 mutant lacks a repair system for X-ray induced damage and are consistence with the proposal that an unrepaired chromosome break leads to reproductive cell death.
mesh_terms: D002875:Chromosomes / Q000032:analysis; D004247:DNA / Q000032:analysis / Q000528:radiation effects*; D004260:DNA Repair / Q000528:radiation effects; D008970:Molecular Weight; D009154:Mutation; D011831:Radiation Genetics; D012441:Saccharomyces cerevisiae / Q000528:radiation effects*; D014965:X-Rays
chemical_list: D004247:DNA