The Influence of DNA Configuration on the Direct Strand Break Yield

Table 1

Dimensions of the main DNA structures for the three configurations studied in this work. Most of these data were extracted from [7]. The target volumes were determined according to these dimensions and the geometrical model used (see [18] for details). All dimensions are shown in nm, unless otherwise stated.

Features	DNA configurations
	A	B	Z
Helix orientation	Right-handed	Right-handed	Left-handed
DNA diameter	2.55	2.37	1.84
bp diameter	1.0	1.0	0.6
bp axial step	0.23	0.33	0.38
Helix pitch	2.46	3.2	3.0
bp/helix turn	10.7	10	12
bp/nucleosome	286	198	172
Helix axial shift	0.76	1.2	0.77
Target angular aperture	87°	73°	60°
Target height	0.119	0.183	0.249
Total number of bp
Target volume (nm^3)	0.12	0.13	0.10