Gb. Zavilgelskii et al., ALLEVIATION OF TYPE-I RESTRICTION IN ESCH ERICHIA-COLI - ARD GENE-ACTION IN UV-IRRADIATED CELLS, Genetika, 32(7), 1996, pp. 1013-1016
The effect of conjugative plasmids Collb-P9 (incI1) and pKM101 (incN),
containing the active ard gene, on the efficiency of EcoK restriction
of nonmodified phage lambda.0 in UV-irradiated Escherichia coli cells
was studied. ard-Dependent antirestriction enzyme activity was shown
to decrease in UV-irradiated cells, The efficiency of action of the ar
d plasmid gene on lambda.0 was also shown not to depend on cell helica
ses RecBCD and UvrD, in contrast to the UV-induced alleviation of EcoK
restriction (SOS alleviation).