Controlling Secondary Structures of Bio-Polymers with Hydrogen-Like Bonding
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We present results for a lattice model of bio-polymers where the type of $β$-sheet formation can be controlled by different types of hydrogen bonds depending on the relative orientation of close segments of the polymer. Tuning these different interaction strengths leads to low-temperature structures with different types of orientational order. We perform simulations of this model and so present the phase diagram, ascertaining the nature of the phases and the order of the transitions between these phases.