Fig. 8.
Representation of the main known relaxase families. The canonical families harboring the ‘HxH’ signature are shown on a yellow background. As previously described, the MOBP and MOBQ families partly overlap [23], and the MOBL family is much closer to the MOBP family [22]. MOBF relaxases are distinct from other canonical families since they contain two active tyrosine in their active site. Three other families have been described: the MOBH family, related to HD-hydrolases, the MOBC family related to restriction endonucleases, and the MOBT family related to Rep_trans RCR proteins