|
Figure 4.
FIG. 4. Structure of BF with G-AF at the postinsertion
site. A, structure of BF bound to G-AF at the postinsertion site
(blue) superimposed with a structure of BF bound to an
unmodified base at the postinsertion site (gray). G-AF (red)
adopts an anti conformation and obstructs the n+1 template base
from occupying the preinsertion site that is itself disordered.
B, C:G-AF base pair surrounded by electron density contoured at
3.5  and calculated using
Fourier coefficients (F[obs] - F[calc])  [calc] with C:G-AF
omitted from the final model. Hydrogen bonds (dashed lines) are
shown accompanied with bond lengths.
|
