PHAGE BASEPLATES. “The current analysis of the T4 baseplate shows how the energy required for infection can in part be stored in the dome-shaped baseplate; it also shows that assembly of the dome-shaped baseplate requires the presence of a template (the central hub) that traps wedges by selecting wedges when they are briefly in a high-energy conformation.” A spaceship from Mars.
http://www.pnas.org/content/113/10/2654.full