FIGURE 1. A van der Waals view of the 15-base-pair DNA structure containing a junction between left-handed Z-DNA and right-handed B-DNA.
From the following article:
Crystal structure of a junction between B-DNA and Z-DNA reveals two extruded bases
Sung Chul Ha, Ky Lowenhaupt, Alexander Rich, Yang-Gyun Kim and Kyeong Kyu Kim
Nature 437, 1183-1186 (20 October 2005)
doi: 10.1038/nature04088
Two bases have been extruded from base stacking at the junction. The white line goes from phosphate to phosphate along the chain. O is shown red, N blue, P yellow and C grey.
