Conformational Sampling and Nucleotide-Dependent Transitions of the GroEL Subunit Probed by Unbiased Molecular Dynamics Simulations. - Lars Skjaerven; Barry J. Grant; Arturo Muga; Knut Teigen; James Andrew McCammon; Nathalie Reuter; Aurora Martinez (PLoS Comput. Biol., 2011)