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Repair of Ultraviolet Light Damage in Saccharomyces Cerevisiae As Studied with Double- and Single-stranded Incoming DNAs

Overview
Journal Curr Genet
Specialty Genetics
Date 1992 Feb 1
PMID 1568259
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Abstract

Purified double- and single-stranded DNAs of the autonomously replicating vector M13RK9-T were irradiated with ultraviolet light (UV) in vitro and introduced into competent whole cells of Saccharomyces cerevisiae. Incoming double-stranded DNA was more sensitive to UV in excision repair-deficient rad2-1 cells than in proficient repair RAD+ cells, while single-stranded DNA exhibited high sensitivity in both host cells. The results indicate that in yeast there is no effective rescue of UV-incoming single-stranded DNA by excision repair or other constitutive dark repair processes.

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