Under ultraviolet radiation of Pseudomonas putida 1087 the SOS-similar response which is expressed in the inhibition of cell respiration and cell division with the following filamentation is revealed. In the result of introduction of pPE24 and pMH21 plasmids into the cells of P. putida 1087 for inhibition of RecA-similar protein the SOS-similar response disappears and the basic cell mass dies.

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