Fig. 2

The genomic island SGI11 and its variants. Red arrows are resistance genes, grey dashed arrows are mercury metabolism genes, black arrows are insertion elements and transposases. Colored dashed lines denote segments in the archetypical SGI11 (a) that are absent in other variants. Red dashed bridge denotes an inversion. yidA// (double forward dash means a truncation) and cyaY-cyaA denote the sites of insertion of the islands. b SGI11b. c SGI11c. d SGI11d. e SGI11e. The ruler gives an approximate island size