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Figure 7.
Figure 7 The superpositioning (Jones et al., 1991[Jones, T. A.,
Zou, J. Y., Cowan, S. W. & Kjeldgaard, M. (1991). Acta Cryst.
A47, 110-119.]) of the observed pseudo-hexadecamer model
(containing the anti A7) onto a theoretical intact hexadecamer
containing bridging phosphate groups. (a) The navy-blue stick
model (Kraulis, 1991[Kraulis, P. J. (1991). J. Appl. Cryst. 24,
946-950.]) depicts the observed pseudo-hexadecamer. The gold
stick model represents the intact hexadecamer model, with the
bridging phosphate groups emphasized in red. (b) A stereodiagram
(Merritt & Bacon, 1997[Merritt, E. A. & Bacon, D. J. (1997).
Methods Enzymol. 277, 505-524.]) close-up of the region where
the phosphate group would most likely occur in an intact
hexadecamer. The color schemes shown are identical to that in
(a). Clearly shown are the two chain termini in the navy-blue
model (the observed structure), the contiguous chain represented
by the intact gold model containing the red phosphate group and
the close agreement between the two.
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