Dynamical structural distributions in proteins
نویسنده
چکیده
A moment analysis of the self-intermediate scattering function is used to reconstruct the distribution of structural displacements in the small protein myoglobin as a function of time, temperature and environment. Model-independent information is obtained on mean squared displacements and the Gauss-deviation. Two types of molecular motions were identified: rotational jumps of side chains and small-scale translational displacements induced by interfacial water. The displacements of water on the protein surface increase sublinearly with time and the fourth moment deviates from a Gaussian value. r 2006 Elsevier B.V. All rights reserved. PACS: 87.15.Aa; 87.15.He; 87.15.Ya
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