Fig. 4
From: Quantifying steric hindrance and topological obstruction to protein structure superposition
Left: the dots indicate intersections between triangle \(Po,P_m,P_{m-1}\) with the remaining structure. The obstruction point \(P{\tilde{o}}\) is chosen to minimize the path length Po to \(P{\tilde{o}}\) to \(P_{m-1}\). Right: the size of end-contraction morphs given as the sum of distance measured in Ångström traveled by all residues are shown as a function of the number of residues contracted. N- and C-terminus contraction seem similar, and their common estimate is explained in the text