Characterization of the conjugative modules of the pRAS4 plasmid of Aeromonas salmonicida reveals an environmental lineage
The complete sequence of pRAS4 is reported, indicating that pRAS4 is a self-transmissible R-plasmid carrying a previously uncharacterized environmental plasmid backbone, and the tetracycline Tet A efflux determinant flanked by Tn3 transposases represents a subsequent adaption under aquaculture associated antibiotic sel...