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Enhanced Sampling Molecular Dynamics Identifies PrPSc Structures Harboring a C-Terminal beta-Core

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Trans‐seeding of Alzheimer‐related tau protein by a yeast prion

Henning Paul-Julius Stahlberg, Zhiva Skachokova

Abnormal tau protein aggregates constitute a hallmark of Alzheimer's disease. The mechanisms underlying the initiation of tau aggregation in sporadic neurodegeneration remain unclear. Here we investigate whether a non-human prion can seed tau aggregation. ...

2022

Ultrafast photoinduced processes in metal - containing molecular complexes and in proteins

Roberto Monni

The aim of this thesis is to investigate the ultrafast inter¿ and intra¿molecular processes, occurring in both metal¿containing molecular complexes and in proteins, by means of ultrafast Transient Absorption (TA) spectroscopy. The first part of the thesis ...

EPFL2015

The Protein-disulfide Isomerase ERp57 Regulates the Steady-state Levels of the Prion Protein

Maurizio Molinari

Although the accumulation of a misfolded and protease-resistant form of the prion protein (PrP) is a key event in prion pathogenesis, the cellular factors involved in its folding and quality control are poorly understood. PrP is a glycosylated and disulfid ...

Amer Soc Biochemistry Molecular Biology Inc2015

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In vivo (1)H MR spectroscopy allows the non invasive characterization of brain metabolites and it has been used for studying brain metabolic changes in a wide range of neurodegenerative diseases. The prion diseases form a group of fatal neurodegenerative d ...

Springer Verlag2015

The doppel (Dpl) and prion (PrP) proteins share a very similar fold (three helices and two short beta-strands), while they differ significantly in sequence (only 25% homologous) and in disease-related beta-rich conformations that occur for PrP only. In a p ...

American Chemical Society2013

Two Misfolding Routes for the Prion Protein around pH 4.5

Ursula Röthlisberger, Ivano Tavernelli

Using molecular dynamics simulations, we show that the prion protein (PrP) exhibits a dual behavior, with two possible transition routes, upon protonation of H187 around pH 4.5, which mimics specific conditions encountered in endosomes. Our results suggest ...

Public Library Science2013

Neurodegenerative diseases such as Alzheimer's disease, Parkinson's disease and Huntington's disease share common mechanisms characterized by protein misfolding and aggregation, including formation of plaques or inclusion bodies. The rapid growing number o ...

EPFL2011

The distinct conformational dependence of chemical shifts caused by R-helices and β-sheets renders NMR chemical shift analysis a powerful tool for the structural determination of proteins. However, the time scale of NMR experiments can make a secondary str ...

2011

In the context of an ageing society neurodegenerative disease have become more and more frequent among humans. Opposing the benefits of a longer life, these diseases have thus triggered research on neurons and how they interact with each other. In vitro as ...

EPFL2011

Elucidating the fine structure of amyloid fibrils as well as understanding their processes of nucleation and growth remains a difficult yet essential challenge, directly linked to our current poor insight into protein misfolding and aggregation diseases. H ...

AMER CHEMICAL SOC2010