Figure 5 - full size

Figure 5.
Fig. 5. Structural flexibility within Vps4. (a) Superimposition of the four independently determined Vps4 structures in the current study. The three molecules (ADP-bound) in the asymmetric unit of the P2[1]2[1]2[1] space group are colored white, cyan, and red, respectively. The one molecule (nucleotide-free) in the asymmetric unit of the P6[5]22 space group is colored yellow. The magnitude of the en bloc motions between the large AAA subdomain and small AAA subdomain and between the small AAA subdomain and the β domain is illustrated schematically. (b) Two potential hinge regions within Vps4 structure. The conserved proline residues in the hinge regions are shown as spheres and highlighted in brown.