1) the backbone sigma parameter (σ B ) is fixed at 1 (base distance unit), 2) the backbonebackbone and backbone-sidechain equilibrium bond lengths (r B-B , r B-S ) are fixed at a value of 1.08 determined from the positions of the optimized helix, 3) harmonic bonds are highly rigid with a dimensionless force constant of 506.25, and 4) all torsions involving sidechain beads are switched off for the sake of simplicity, such that the relevant 1-4 pairs interact only through the nonbonded potential. The masses of both particle types are fixed at 100 AMU, which only affects the dynamics, not the thermodynamics. Explicit sidechain torsions are expected to play an important role in facilitating folding, and will be revisited in future studies.