Fig. 2From: Inferring 3D chromatin structure using a multiscale approach based on quaternionsQuadruple of consecutive beads in a chain model. The two triples B 1−B 2−B 3 and B 2−B 3−B 4 determine, respectively, the planes P 1 and P 2 and the associated planar angles ψ 1 and ψ 2. Planes P 1 and P 2, in turn, determine the dihedral angle φ 1 Back to article page