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Figure 5.
Figure 5 Schematic representation (Kraulis, 1991[Kraulis, P. J.
(1991). J. Appl. Cryst. 24, 946-950.]; Merritt & Bacon,
1997[Merritt, E. A. & Bacon, D. J. (1997). Methods Enzymol. 277,
505-524.]) of the interactions in the protein-DNA binding site
of form IV. The hydrogen-bonding distances between 2.4 and 3.3
Å are indicated with white dotted lines. The non-bonded contacts
ranging from 3.3 to 3.7 Å are indicated with longer-dashed
magenta lines. Also shown with black dotted lines is the
ion-pair formed by D114 O  1
with R116 N  and
D114 O 2
and R116 N  2 as
observed in form IV.
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