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. 2019 May 3;10:18. doi: 10.1186/s13100-019-0160-9

Fig. 8.

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