Figure 1.

The triskelion simulation model, shown here in top view (left) and side view (right), is based on the idealized structure of clathrin. Three proximal legs run from the central hub (red) to a knee (green), under a pucker angle χ relative to the threefold rotational symmetry axis (C₃), followed by three distal legs running from the knees to the ankles (yellow). In all simulations, the pucker angle was set equal to 101°. The particle is simulated as a rigid unit with proximal and distal legs of equal length.