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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.
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