Figure 3:

Diffusive propagators for Ubiquitin. Comparison of propagators p(Q,t|Q₀,0) from the 1D diffusion model (lines) with those estimated directly from MD statistics (symbols). Propagators for lag times of 1 ns, 10 ns, 100 ns and 1 μs are shown in green, black, red and blue respectively (a lag of 100 ns was used to parametrize the diffusion model). The initial positions Q₀ are shown by vertical broken lines in each plot.