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Figure 2.
Figure 2 Rigid (blue), flexible (green) and most flexible (red)
regions in a PNA subunit. Pink and cyan balls represent metal
ions. Red balls represent invariant water molecules obtained
through the superposition of 16 subunits along with their
hydration shells. The lactose molecule is in ball-and-stick
representation. This and the subsequent figures were prepared
using MOLSCRIPT (Kraulis, 1991[Kraulis, P. (1991). J. Appl.
Cryst. 24, 946-950.]).
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