Influence of quadrupolea??quadrupole-type interaction on the chaotic dynamics of $lpha$-helical proteins

摘要

By proposing a model Hamiltonian in the first quantised form we investigate the chaotic dynamics of $lpha$-helical proteins by taking into account the quadrupolea??quadrupole-type interaction. The dynamics is studied byderiving Hamiltona??s equations of motion and by plotting the time-series evolution and phase-space trajectories. Chaotic trajectories are observed in the phase-space plots. The effect of the interaction parameters on the stabilityof proteins is also discussed.