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Default Predictive Atomic Resolution Descriptions of Intrinsically Disordered hTau40 and ?-Synuclein in Solution from NMR and Small Angle Scattering.

Predictive Atomic Resolution Descriptions of Intrinsically Disordered hTau40 and ?-Synuclein in Solution from NMR and Small Angle Scattering.

Related Articles Predictive Atomic Resolution Descriptions of Intrinsically Disordered hTau40 and ?-Synuclein in Solution from NMR and Small Angle Scattering.

Structure. 2013 Dec 18;

Authors: Schwalbe M, Ozenne V, Bibow S, Jaremko M, Jaremko L, Gajda M, Jensen MR, Biernat J, Becker S, Mandelkow E, Zweckstetter M, Blackledge M

Abstract
The development of molecular descriptions of intrinsically disordered proteins (IDPs) is essential for elucidating conformational transitions that characterize common neurodegenerative disorders. We use nuclear magnetic resonance, small angle scattering, and molecular ensemble approaches to characterize the IDPs Tau and ?-synuclein. Ensemble descriptions of IDPs are highly underdetermined due to the inherently large number of degrees of conformational freedom compared with available experimental measurements. Using extensive cross-validation we show that five different types of independent experimental parameters are predicted more accurately by selected ensembles than by statistical coil descriptions. The improvement increases in regions whose local sampling deviates from statistical coil, validating the derived conformational description. Using these approaches we identify enhanced polyproline II sampling in aggregation-nucleation sites, supporting suggestions that this region of conformational space is important for aggregation.


PMID: 24361273 [PubMed - as supplied by publisher]



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