The R plasmid pJH1 contains a 5.1-kilobase transposon ( Tn3871 ) that mediates inducible resistance to erythromycin. Three AvaI digestion fragments from this transposon are identical in size to and homologous with three AvaI-derived fragments from the previously described erythromycin resistance transposon Tn917 . These three DNA fragments account for greater than 90% of both transposons.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC215569PMC
http://dx.doi.org/10.1128/jb.158.3.1172-1174.1984DOI Listing

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