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  • Key words Adaptive mutations  (1)
  • UV mutability  (1)
  • 1
    Digitale Medien
    Digitale Medien
    Starvation in yeast increases non-adaptive mutation (1999)
    Springer
    Current genetics 35 (1999), S. 77-81 
    Details
    ISSN: 1432-0983
    Schlagwort(e): Key words Adaptive mutations ; 6-N-hydroxylaminopurine ; Saccharomyces cerevisiae
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract The frequency of reversion in a histidine-requiring mutant of Saccharomyces cerevisiae increases about ten-fold in stationary cells during histidine starvation. Histidine starvation enhances a similar frequency of reversion in a tryptophan-requiring mutant. Starvation, therefore, enhances mutation frequencies in a non-adaptive manner. The base analogue 6-N-hydroxylaminopurine (HAP) added prior to plating on medium with limited histidine strongly increases reversion of the histidine mutant. HAP-induced reversion increases further in stationary starving cells with the same kinetics as that which increases spontaneous reversion. Adding HAP to the stationary starving cells does not produce any effect.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s002940050435
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    The uvsC and uvsE genes of Aspergillus nidulans are not required for the mutagenic repair of UV damage (1998)
    Springer
    Molecular genetics and genomics 259 (1998), S. 130-132 
    Details
    ISSN: 1617-4623
    Schlagwort(e): Key wordsAspergillus nidulans ; uvsC ; uvsE ; UV mutability
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract The uvsC gene of Aspergillus nidulans is a homolog of the RAD51 gene of Saccharomyces cerevisiae. However, with respect to its effects on UV mutagenesis, it differs from the yeast gene, since it seems to be required for UV mutagenesis; however, this conclusion is based only on data from resting conidia. To further clarify the functional role of the uvsC gene, we tested the UV mutability of strains bearing a uvsC mutation in resting as well as in germinating conidia, by the p-fluoro-phenyl-alanine resistance test. We also evaluated the mutability of the uvsE mutant which belongs to the same epistatic group. Our results show that the uvsC and uvsE genes do not have a significant role in the mutagenic UV-repair pathway.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s004380050797
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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