Figure 5 - full size

 

Figure 5.
Figure 5. The Binding of ATP-Bound HslU Opens the Central Pore of HslV(a) Uncomplexed HslV has a closed pore [27].(b) The binding of the ATP-bound HslU opens the central pore of HslV with an average diameter of 19.3Å [27]. The HslU C terminus is shown in magenta. The insertion of the C terminus and relative twisting ring rotation may be responsible for the pore opening in a "twist-and-open" mechanism. Two conserved arginines, Arg-86 and Arg-89, are also shown. There are two more positively charged residues, which are not shown, nearby at the pore of HslV (Arg-83 and Lys-90)

The above figure is reprinted by permission from Cell Press: Structure (2001, 9, 1107-1116) copyright 2001.