Degradation of Escherichia Coli DNA Synthesized after Ultraviolet Irradiation in the Absence of Repair

Author： Trgovčević Željko   Petranović Drago   Petranović Mirjana   Salaj-Šmic Erika  

Publisher： Informa Healthcare

ISSN： 1362-3095

Source： International Journal of Radiation Biology, Vol.45, Iss.2, 1984-02, pp. : 193-196

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Abstract

DNA degradation in Escherichia coli uvrA recA bacteria exposed to a low dose (0·07 J/m2) of ultraviolet radiation was studied. A considerable amount of the newly-synthesized DNA, which contains gaps opposite pyrimidine dimers, is broken down. In contrast, parental, dimer-containing DNA is resistant to radiation-induced degradation.

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