Figure 5.
Fig. 5.
Base-stacking interactions in T2A2 (left) and A2T2 (fight) at
steps where the step types (Py/Pu) have changed: (a) 4-5, (b) 6-7 and
(c) 8-9. Dark bonds for the base pair on the top and open bonds for
the base at the bottom. Notice the lack of stacking at the central Py-
Py step 6-7 in T2A2, which is overwound (see text).
The above figure is reprinted
by permission from the IUCr:
Acta Crystallogr D Biol Crystallogr
(1995,
51,
190-198)
copyright 1995.
