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  • Title: [In vitro repair of gamma-irradiated transforming Bacillus subtilis DNA by extracts of blue-green algae].
    Author: Shevchenko TN, Gushcha NI, Dmitriev AP, Grodzinskiĭ DM.
    Journal: Genetika; 1982 Apr; 18(4):551-4. PubMed ID: 6806146.
    Abstract:
    A cell-free extract from blue-green alga Anacystis nidulans contains enzymes which repair in vitro the transforming activity of gamma-irradiated Bacillus subtilis DNA. The level of restoration of the transforming activity depends on the protein concentration in the reaction mixture, the duration of incubation and on the dose of irradiation. The repair of gamma-induced lesions is most efficient in the presence of magnesium ions, NAD and ATP. The present data indicate that the repair of transforming DNA is performed with the participation of DNA polymerase and polynucleotide ligase which function in the cell-free extract of algae.
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