Figure 1
From: Sequence-dependent DNA helical rise and nucleosome stability
Central 57 bp of NCP147 nucleosome. The black thick arrow, from the central, boldfaced Adenine, represents the dyad axis. The sequence is divided into 6 symmetric tracts to the left (L1 to L6) and 6 to the right (R1 to R6), marked by thin arrows. W and C marks the two DNA strands at the DNA-phosphate interaction points with histones in the (H3H4)2-tetramer. This frame is referred to as the mask in the text.