Fig. 3.

(A–F) Binding distribution histograms for QD-tagged FtsK in the presence of the indicated nucleotide cofactor. All reactions were conducted in buffer containing 100 mM NaCl. For D and F, the reported distribution corresponds to the first detected binding position of FtsK molecules before their translocation away from the initial binding sites (Fig. S9 and SI Materials and Methods). The relative locations of the KOPS sites are illustrated schematically in A.