title: A gene encoding an SOS inhibitor is present in different conjugative plasmids.
abstract: In 9 of 20 conjugative plasmids of different incompatibility groups, including F and R100 (or R6-5), coexist two sequences which are homologous, respectively, to the gene psiB, which encodes an inhibitor of SOS induction, and to the gene ssb, which encodes a single-stranded-DNA-binding protein.
mesh_terms: D001426:Bacterial Proteins / Q000235:genetics*; D003227:Conjugation, Genetic; D004260:DNA Repair; D004269:DNA, Bacterial / Q000235:genetics; D004926:Escherichia coli / Q000235:genetics*; D005784:Gene Amplification; D005798:Genes, Bacterial; D009693:Nucleic Acid Hybridization; D010957:Plasmids; D013014:SOS Response, Genetics; D012689:Sequence Homology, Nucleic Acid
chemical_list: D001426:Bacterial Proteins; D004269:DNA, Bacterial