Fig. 2
From: The IS6 family, a clinically important group of insertion sequences including IS26
The general characteristics of the IS6 family. a: Distribution of IS length (base pairs). The number of examples used in the sample is shown above each column. b: shows the domain structure of IS6 family transposases with a helix-turn-helix domain (HTH) and a catalytic domain with the Characteristic DDE triad followed by a K/R residue, and, in the case of the middle section, an additional zinc finger motif present in the longer members of the family (clade h) while in the righthand section an additional N-terminal domain is present (clade i). c: Secondary structure prediction of TnpA IS26 by Jpred [24]. d: Left (IRL) and right IRR inverted terminal repeats are shown in WebLogo format [25]