Figure 1
![Figure 1](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2F1752-0509-6-S1-S20/MediaObjects/12918_2012_Article_889_Fig1_HTML.jpg)
Occurrence of RuvABC system and YebC family in different bacterial taxa. The tree is based on a highly resolved phylogenetic tree of life (see Methods). "YebC-RuvC operon" represents organisms in which YebC and RuvC genes are located within the same operon.