Figure 2: Crystal structure of the nucleosome containing two symmetric AP sites.
From: Polymorphism of apyrimidinic DNA structures in the nucleosome
(a) The double AP nucleosome structure. The two AP (THF) sites are represented by red stars, and AP site 1 and AP site 2 are indicated by arrows. (b) Close-up views of the DNA structures at AP site 1 and AP site 2. The location of the THF region is indicated by an arrow. (c) Schematic representation of the DNA structures at AP site 1 and AP site 2. The locations of the THF and the disordered regions are indicated by arrows.
