Relationships among the streptothricin resistance transposons Tn1825 and Tn1826 and the trimethoprim resistance transposon Tn7

Plasmid. 1987 Nov;18(3):246-9. doi: 10.1016/0147-619x(87)90067-9.


The streptothricin resistance transposons Tn1825 and Tn1826 are closely related, based on physical and genetic characteristics, to the trimethoprim resistance transposon Tn7. These transposons may be considered to be members of a transposon family sharing in common the transposition functions and a basic streptomycin/spectinomycin resistance determinant but differing from one another with respect to particular additional resistance genes inserted to the left of the aadA gene.

MeSH terms

  • DNA Restriction Enzymes / metabolism
  • DNA Transposable Elements*
  • DNA, Bacterial / metabolism
  • Drug Resistance, Microbial / genetics*
  • Plasmids*
  • Streptothricins
  • Trimethoprim Resistance


  • DNA Transposable Elements
  • DNA, Bacterial
  • Streptothricins
  • DNA Restriction Enzymes