5 papers
Random walks in the space of conformations of toy proteins
Rose Du, Alexander Yu. Grosberg, Toyoichi Tanaka
Monte Carlo dynamics of the lattice 48 monomers toy protein is interpreted as a random walk in an abstract (discrete) space of conformations. To test the geometry of this space, we…
Unexpected scenario of glass transition in polymer globules: an exactly enumerable model
Rose Du, Alexander Yu. Grosberg, Toyoichi Tanaka +1
We introduce a lattice model of glass transition in polymer globules. This model exhibits a novel scenario of ergodicity breaking in which the disjoint regions of phase space do no…
Freezing Transition of Compact Polyampholytes
Vijay S. Pande, Alexander Yu. Grosberg, Chris Joerg +2
Polyampholytes (PAs) are heteropolymers with long range Coulomb interactions. Unlike polymers with short range forces, PA energy levels have non-vanishing correlations and are thus…
Is Heteropolymer Freezing Well Described by the Random Energy Model?
Vijay S. Pande, Alexander Yu. Grosberg, Chris Joerg +1
It is widely held that the Random Energy Model (REM) describes the freezing transition of a variety of types of heteropolymers. We demonstrate that the hallmark property of REM, st…
Freezing Transition of Random Heteropolymers Consisting of an Arbitrary Set of Monomers
Vijay S. Pande, Alexander Yu. Grosberg, Toyoichi Tanaka
Mean field replica theory is employed to analyze the freezing transition of random heteropolymers comprised of an arbitrary number () of types of monomers. Our formalism assumes…