TOD

Abstract

We present mathematical restrictions for torus knots and links, and for bent helices. The concept of twist neutrality is developed for bent and coiled structures and biological applications are reviewed [1,2].

[1] K. Olsen and J. Bohr, Geometry of the toroidal N-helix: optimal-packing and zero-twist. New Journal of Physics 14, 023063 (2012).

[2] J. Bohr and K. Olsen, Twist neutrality and the diameter of the nucleosome core particle. Phys. Rev. Lett. 108, 098101 (2012).