[Radioresistance mechanisms of Micrococcus radiodurans].
The modern conceptions on the molecular mechanisms of Micrococcus radiodurans viability under the action of ionized radiation have been considered. Factors providing a high level of the bacterium radioresistance-the peculiarities of the cell wall structure, membranes, DNA, the redundancy of genetic information, the multiplicity of sites of DNA attachment to the membrane, a high level of antioxidant and antiradical systems-have been analysed. It has been shown that the efficiency of accurate, error-free, well balanced DNA repair system in connection with M. radiodurans properties mentioned provides a high radiation resistance of this microorganism.
D002338:Carotenoids / Q000528:radiation effects; D002462:Cell Membrane / Q000528:radiation effects; D002473:Cell Wall / Q000528:radiation effects; D003593:Cytoplasm / Q000528:radiation effects; D004260:DNA Repair / Q000528:radiation effects; D004269:DNA, Bacterial / Q000528:radiation effects; D004277:DNA, Single-Stranded / Q000528:radiation effects; D004259:DNA-Directed DNA Polymerase / Q000528:radiation effects; D004926:Escherichia coli / Q000528:radiation effects; D005720:Gamma Rays; D008563:Membrane Lipids / Q000528:radiation effects; D008837:Micrococcus / Q000254:growth & development / Q000378:metabolism / Q000528:radiation effects*; D009154:Mutation; D011836:Radiation Tolerance; D013696:Temperature; D014466:Ultraviolet Rays
D004269:DNA, Bacterial; D004277:DNA, Single-Stranded; D008563:Membrane Lipids; D002338:Carotenoids; D004259:DNA-Directed DNA Polymerase
Mekhanizmy radioustoĭchivosti Micrococcus radiodurans.