To model the binding of different ADF/cofilins with F-actin, the structures of UNC-60A, UNC-60B and LdCof were superimposed on the HsCOF in the cryo-electron microscopy structure of human cofilin decorated F-actin to observe the binding of these proteins on F-actin. (A) Overlays of structure of unc-60a with cryoelectron microscopy structure of HsCof with F-actin. (B) Overlay of structure of UNC-60B and LdCOF on HsCof/F-actin. In overlays, actin protomers are shown in different colors. Structure of HsCof, UNC-60A, UNC-60B and LdCof are shown in magenta, green, red and cyan colors, respectively. ADF/cofilins are shown in cyan color, residues of F-loop showing motion on nanaosecond-picoseconds are shown in blue color. Structure of HsCof was omitted from overlays of UNC-60B and LdCOF for clearity.