title: Genetic loci responsible for incompatibility on a co-integrate plasmid, R100-1.
abstract: An R plasmid, R100-1, was mapped previously (Yoshikawa, 1974) by transduction from an integratively suppressed Hfr strain to a recipient with a mutation in gene dnaA. By this method various types of transductants of plasmid R100-1 that exist autonomously or in the integrated state were obtained. Seventy-one such transductants were used in the present study to map gene inc, which is responsible for incompatibility. The results obtained can be explained by either of the following: (i) R100-1 has only a single gene or gene cluster (inc) despite previous work suggesting that this plasmid is a co-integrate of two replicons; (ii) R100-1 possesses more than one inc locus located between the repA and tra loci.
mesh_terms: D002701:Chloramphenicol / Q000494:pharmacology; D002874:Chromosome Mapping; D003227:Conjugation, Genetic; D004352:Drug Resistance, Microbial; D004926:Escherichia coli / Q000187:drug effects; D005796:Genes; D011815:R Factors; D013307:Streptomycin / Q000494:pharmacology; D013449:Sulfonamides / Q000494:pharmacology; D013752:Tetracycline / Q000494:pharmacology; D014161:Transduction, Genetic
chemical_list: D013449:Sulfonamides; D002701:Chloramphenicol; D013752:Tetracycline; D013307:Streptomycin