The RuvB protein makes up part of the RuvABC revolvasome whichcatalyses the resolution of Holliday junctions that arise duringgenetic recombination and DNA repair. Branch migration iscatalysed by the RuvB protein that is targeted to the Hollidayjunction by the structure specific RuvA protein [1]. This familycontains the N-terminal region of the protein. Holliday junction DNA helicase ruvB N-terminus RuvB_N