Distribution of the values of torsional angles of a 67 residues long protein (1CTF) during a 3.5 ⋅ 10⁵ time-steps Monte-Carlo simulation.

<p>Each of the stacked barchart is relative to a different torsional angle. At each simulation step the structure is deformed by applying our algorithm to a randomly chosen portion of the chain (with probability 0.7) or by a pivot move (with probability 0.3). In the former case the step size <i>ds</i> is chosen from a normal distribution with mean 0 <i>rad</i> and variance 0.08 <i>rad</i>². In the latter case a randomly chosen <i>ϕ</i> or <i>ψ</i> angle is perturbed by adding to it a quantity that is chosen from a normal distribution with mean 0 <i>rad</i> and variance 0.4 <i>rad</i>².