Figure 1.
Fig. 1. Portions of the
2Fo-Fc
difference electron-density maps
around base pair A(3).T(18) of d(CCAGGCmSCTGG). The
maps are contoured at 1.5 times their r.m.s, density. Models and
maps are derived from (a)
NUCLSQ, (b) TNT
and (c)
X-PLOR.
The above figure is reprinted
by permission from the IUCr:
Acta Crystallogr D Biol Crystallogr
(1993,
49,
468-477)
copyright 1993.
