Allostery in a Coarse-Grained Model of Protein Dynamics

Details Allostery in a Coarse-Grained Model of Protein Dynamics Allostery in a Coarse-Grained Model of Protein Dynamics

2005-06-22

arxiv.org/abs/q-bio/0506031v7

Phys. Rev. Lett. 95, 198103 (2005)

Biology

Quantitative Biology

Biomolecules

11 pages, 3 figures; Fixed typo in Eq. (4); Changed local report number; Renormalized Fig. 1 to # of non-zero modes; Fixed sca

Scientific paper

10.1103/PhysRevLett.95.198103

We propose a criterion for optimal parameter selection in coarse-grained models of proteins, and develop a refined elastic network model (ENM) of bovine trypsinogen. The unimodal density-of-states distribution of the trypsinogen ENM disagrees with the bimodal distribution obtained from an all-atom model; however, the bimodal distribution is recovered by strengthening interactions between atoms that are backbone neighbors. We use the backbone-enhanced model to analyze allosteric mechanisms of trypsinogen, and find relatively strong communication between the regulatory and active sites.

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