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FlexE: Using elastic network models to compare models of protein structure.


ABSTRACT: It is often valuable to compare protein structures to determine how similar they are. Structure comparison methods such as RMSD and GDT-TS are based solely on fixed geometry and do not take into account the intrinsic flexibility or energy landscape of the protein. We propose a method, which we call FlexE, that is based on a simple elastic network model and uses the deformation energy as measure of the similarity between two structures. FlexE can distinguish biologically relevant conformational changes from random changes, while existing geometry-based methods cannot. Additionally, FlexE incorporates the concept of thermal energy, which provides a rational way to determine when two models are "the same". FlexE provides a unique measure of the similarity between protein structures that is complementary to existing methods.

SUBMITTER: Perez A 

PROVIDER: S-EPMC4269272 | biostudies-literature | 2012 Oct

REPOSITORIES: biostudies-literature

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FlexE: Using elastic network models to compare models of protein structure.

Perez Alberto A   Yang Zheng Z   Bahar Ivet I   Dill Ken A KA   MacCallum Justin L JL  

Journal of chemical theory and computation 20121001 10


It is often valuable to compare protein structures to determine how similar they are. Structure comparison methods such as RMSD and GDT-TS are based solely on fixed geometry and do not take into account the intrinsic flexibility or energy landscape of the protein. We propose a method, which we call FlexE, that is based on a simple elastic network model and uses the deformation energy as measure of the similarity between two structures. FlexE can distinguish biologically relevant conformational c  ...[more]

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