Figure 2 - full size

Figure 2.
Figure 2. A: A view down the axis of the MtRecA filament highlighting the residues in the two loops, L1 and L2, that form part of the inner core of the filament. DNA is expected to bind at the groove in the centre. Superposition of the residues corresponding to the loop (and five residues preceeding and five residues succeding the loop) regions (B) L1 and (C) L2, L1 seen clearly in the ATP SMg^+2 complex and L2 seen in ATP S complex, are shown in black. The loops in the other structures were only partially decipherable from their electron density maps, and are shown in gray shades.