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J Bacteriol. 1982 January; 149(1): 136-144

Beta-lactamase-specifying plasmids isolated from Neisseria gonorrhoeae have retained an intact right part of a Tn3-like transposon.

ABSTRACT

In three beta-lactamase-producing strains of Neisseria gonorrhoeae, ampicillin resistance is due to the presence of a 7.4-kilobase plasmid. Heteroduplex analysis has shown that the R plasmid contains a 1.6-kilobase segment homologous to the right part (the region coding for the beta-lactamase) of the Tn3-like transposon Tn2301 the 1.6-kilobase DNA segment is not transposable, but it can give rise to a functional transposon, when linked to the left part of TN2301. This provides strong evidence that the R plasmids of N. gonorrhoeae are deletion derivatives of a plasmid that contained an entire TN3-like transposon.

This article has been cited by other articles:

• Pagotto, F., Dillon, J.-A. R. (2001). Multiple Origins and Replication Proteins Influence Biological Properties of {beta}-Lactamase-Producing Plasmids from Neisseria gonorrhoeae. J. Bacteriol. 183: 5472-5481 [Abstract] [Full Text]