A Gauge Field Theory of Chirally Folded Homopolymers with Applications to Folded Proteins

2009/02/28 by Ulf H. Danielsson, Martin Lundgren, Antti J. Niemi · 2 citations
Physics and Astronomy · Biochemistry, Genetics and Molecular Biology · #cond-mat.stat-mech #cond-mat.soft #hep-lat #physics.bio-ph #q-bio.BM

paper · pdf · doi:10.1103/physreve.82.021910

published as Phys.Rev.E82:021910,2010 · 5 pages and three figures

arxiv created 2010/08/26 · arxiv updated 2014/11/18

Abstract

We combine the principle of gauge invariance with extrinsic string geometry to develop a lattice model that can be employed to theoretically describe properties of chiral, unbranched homopolymers. We find that in its low temperature phase the model is in the same universality class with proteins that are deposited in the Protein Data Bank, in the sense of the compactness index. We apply the model to analyze various statistical aspects of folded proteins. Curiously we find that it can produce results that are a very good good match to the data in the Protein Data Bank.

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