Figure 2: Actin-spectrin meshwork simulation.

A) 3D view of the initial configuration of the mesh. Pink and black lines correspond to spectrin and connector edges, respectively. Grey filled circles are F-actin nodes and black empty circles represent focal adhesions. B) Schematic representation of the angle ${\theta }_{\alpha ,\beta }$ formed by the $\alpha$ and $\beta$ triangular faces of the meshwork. C) Myosin edges (red lines) end points are localized at the centers of the spectrin triangles (pink) at position ${\mathbf{p}}_{\alpha }=\left({\mathbf{r}}_i+{\mathbf{r}}_{i+1}+{\mathbf{r}}_{i+2}\right)/3$. The force generated by myosin is equally distributed between the F-actin nodes (gray) connecting the spectrin triangle. D) Flowchart of the simulation.