Soliton in alpha helical proteins with interspine coupling at higher order

We study the dynamics of alpha helical proteins with next nearest neighbour interactions and interspine coupling at higher order in the continuum limit. The molecular excitations along the three hydrogen bonding spines are found to be governed by soliton modes for specific choices of parameters. The solitons propagating along the neighbouring spines are found to collide inelastically and share the energy among them.

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