title: Complementation of replication-deficient deletion derivatives of plasmid mini-F.
abstract: Deleted mini-F plasmids with defects in replication were constructed and tested to see whether they could be rescued through complementation by a helper plasmid. This allowed us to identify two genetic loci determining trans-acting functions required for stable maintenance of plasmid mini-F, one encoded by the PstI fragment from 45.7 to 47.3 F-coordinates (F) and the other most probably located in the region from 43.1 to 43.8 F. The smallest mini-F plasmid that could be established through complementation consists of the PstI fragment 44.0 to 45.7 F, encoding origin II and the incB locus.
mesh_terms: D004261:DNA Replication; D004262:DNA Restriction Enzymes; D015252:Deoxyribonucleases, Type II Site-Specific; D004926:Escherichia coli / Q000235:genetics; D005144:F Factor; D005816:Genetic Complementation Test; D010957:Plasmids; D014169:Transformation, Bacterial
chemical_list: D004262:DNA Restriction Enzymes; C024388:CTGCAG-specific type II deoxyribonucleases; D015252:Deoxyribonucleases, Type II Site-Specific