Crunching biofilament rings

  title={Crunching biofilament rings},
  author={Julien Fierling and Martin Michael M{\"u}ller and Herv'e Mohrbach and Albert Johner and Igor M. Kuli'c},
  journal={Europhysics Letters},
We discuss a curious example for the collective mechanical behavior of coupled non-linear monomer units entrapped in a circular filament. Within a simple model we elucidate how multistability of monomer units and exponentially large degeneracy of the filament's ground state emerge as a collective feature of the closed filament. Surprisingly, increasing the monomer frustration, i.e., the bending prestrain within the circular filament, leads to a conformational softening of the system. The… 

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