Functional properties ofEscherichia coli single-stranded DNA binding proteins in vivo

Experiments were carried out on several strains of E. coli K-12: JGC158 ssb/sup +/ (wild type), JGC155 ssb-1, PAM2611 ssb-113. Data on the intensity of DNA degradation at temperatures of 30 and 42/sup 0/C in intact and irradiated cells (with gamma or UV rays) are given. It is found that SSB-proteins can participate both in normal physiological processes and also in the formation of pathological processes in dividing cells.