Finite-size phase diagram of the Wako-Saito-Munoz-Eaton alpha-helix model

초록

The folding transition of a Wako-Sait-MuEenoz-Eaton (WSME) alpha-helix model is studied by using several methods. The transition temperature of a finite-size system is defined by using the extrapolation of partition function zeros, a microcanonical analysis, and the average fraction of unbroken native contacts, and the result is applied to a WSME alpha-helix model. The analysis results in a phase diagram for the helix, whose boundaries depend on the method used for defining the transition temperature. However, the qualitative behaviors are quite similar for all of these methods, and any definition can lead to a reasonable phase diagram for a finite-size system.

키워드