Functionals linear in curvature and statistics of helical proteins

Details Functionals linear in curvature and statistics of helical proteins Functionals linear in curvature and statistics of helical proteins

2002-11-19

arxiv.org/abs/cond-mat/0211415v2

Nucl.Phys. B705 (2005) 577-592

Physics

Condensed Matter

18 pages, LaTeX2e, no figures, no tables; the title is changed slightly, the explanations are added concerning the physical co

Scientific paper

10.1016/j.nuclphysb.2004.10.062

The effective free energy of globular protein chain is considered to be a functional defined on smooth curves in three dimensional Euclidean space. From the requirement of geometrical invariance, together with basic facts on conformation of helical proteins and dynamical characteristics of the protein chains, we are able to determine, in a unique way, the exact form of the free energy functional. Namely, the free energy density should be a linear function of the curvature of curves on which the free energy functional is defined. We briefly discuss the possibility of using the model proposed in Monte Carlo simulations of exhaustive searching the native stable state of the protein chain. The relation of this model to the rigid relativistic particles and strings is also considered.

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