title: Transposition of a beta-lactamase locus from RP1 into Pseudomonas putida degradative plasmids.
abstract: The beta-lactamase gene from the RP1 plasmid transposes into at least two Pseudomonas putida degradative plasmids. Donor strains that carry RP1 (bla+ tet+ aphA+) and a degradative plasmid yield transconjugants that have only the bla+ marker of RP1. This occurs in up to 80% of all bla+ transconjugants. Segregation of the bla+ marker requires the presence of a degradative plasmid in the donor and is only observed in transconjugants that have received degradative markers. The bla+ tet aphA transconjugants show 100% linkage of bla+ to degradative markers in conjugation,transduction, and transformation crosses. A transduction cross of an (RP1), (SAL) donor shows that 8% of all SAL plasmids also carry the transposed bla+ marker. Tn401 is the name we assign to the bla+ transposon from RP1 observed in Pseudomonas. Its identity with the RP1 bla+ transposon observed in Escherichia coli is not known. In four cases, Tn401 has inserted into the camphor genes of the CAM-OCT plasmid.
mesh_terms: D000473:Alkanes / Q000378:metabolism; D002164:Camphor / Q000378:metabolism; D002228:Carbenicillin / Q000494:pharmacology; D003227:Conjugation, Genetic; D005111:Extrachromosomal Inheritance; D005796:Genes; D009154:Mutation; D009355:Neomycin / Q000494:pharmacology; D010403:Penicillin Resistance; D010405:Penicillinase; D010957:Plasmids; D011549:Pseudomonas / Q000187:drug effects / Q000201:enzymology* / Q000378:metabolism; D011815:R Factors; D012459:Salicylates / Q000378:metabolism; D013752:Tetracycline / Q000494:pharmacology; D014161:Transduction, Genetic; D014170:Transformation, Genetic
chemical_list: D000473:Alkanes; D012459:Salicylates; D002164:Camphor; D010405:Penicillinase; D013752:Tetracycline; D002228:Carbenicillin; D009355:Neomycin