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A P Dmitriev

Publications and source records attributed to A P Dmitriev.

9 recordsLinked to original sources
PubMed1982

[In vitro repair of gamma-irradiated transforming Bacillus subtilis DNA by extracts of blue-green algae].

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.

Bacillus subtilis↗
PubMedDate not supplied

[A training walker].

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Equipment Design↗
PubMedDate not supplied

[Intracellular oxygen and the radiosensitization of cells of the blue-green alaga, Anacystis nidulans].

The photosynthetic system of the blue-green alga Anacystis nidulans was inactivated by 30% at a dose of 100 krad of gamma irradiation in N2. If the cells were irradiated in N2+2% CO2 in the light, their radiation sensitivity was increased with an oxygen enhancement ratio of 2.0. Neither light nor CO2 taken separately affected radiosensitization of the cells which increased almost to the same extent as under aerobic conditions in the presence of both light and CO2. The intracellular oxygen of the photosynthetic origin caused apparently the same radiosensitization as oxygen derived from the extracellular sources.

Carbon Dioxide↗