DNA and Double-Stranded Oligonucleotides - Free-Radical-Induced DNA Damage and Its Repair - page 356

Fig. 12.6. Radiolysis of Z-DNA. Frequency of frank SSBs ( top ) and damaged bases (ALSs, bottom ).
Solid lines were calculated using RADACK procedure according to Spotheim-Maurizot et al. (2003,
with permission)

fact that the size of the minor grove in B-DNA varies substantially with the base
sequence and influences markedly the accessibility to H4

′ and H5 ′ 2 but barely

that to H5 ′ 1. When the width of the minor groove is <4.5 Å, the accessibility of

H4 ′ and H5 ′ 2 drastically diminishes and so does the frequency of induced frank

SSBs.