[Properties of the replicator region of the natural plasmid pLG13 containing genes of the EcoRV restriction-modification system].

The previously constructed plasmid pILRV8 that induces endonuclease EcoRV gene overexpression kills cells of some E. coli strains under the induction of this enzyme synthesis. Cell transformation by natural plasmid pLG13 carrying genes of the EcoRV restriction--modification system was found to appreciably enhance cell viability ("survival") under endonuclease overproduction.