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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 

The hypermutability conferred by the mus308 mutation of Drosophila is not specific for cross-linking agents.

The hypersensitivity of the mus308 mutant of D. melanogaster to cross-linking agents has been suggested to be the consequence of a possible defect of this mutant in DNA cross-link repair. Moreover, the mus308 mutation has been proposed as an animal model for the study of Fanconi's anemia. In order to obtain more information about the function controlled by this locus, we have measured the mutability of the mus308 mutant to several mutagens with different modes of action using the sex-linked recessive lethal test. We show that this mutation confers hypermutability not only to the cross-linking agents tested, hexamethylphosphoramide and hexamethylmelamine, but to the point mutagen N-ethyl-N-nitrosourea as well, whereas the response to methyl methanesulfonate was normal. The results suggest that the mus308 locus is not defective in a repair pathway specific for cross-links but is rather involved in a step of a more general post-replication repair process responsible for the removal of non-excised adducts.[1]

References

  1. The hypermutability conferred by the mus308 mutation of Drosophila is not specific for cross-linking agents. Aguirrezabalaga, I., Sierra, L.M., Comendador, M.A. Mutat. Res. (1995) [Pubmed]
 
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