CD and NMR Studies of Prion Protein (PrP) Helix 1
نویسندگان
چکیده
منابع مشابه
Peptides and proteins in neurodegenerative disease: helix propensity of a polypeptide containing helix 1 of the mouse prion protein studied by NMR and CD spectroscopy.
Transmissible spongiform encephalopathies (TSE) or "prion diseases" have been related to the "protein-only hypothesis", which suggests that the "scrapie form (PrPSc)" of the prion protein (PrP) is the TSE infectious agent. The nmr structure of the ubiquitous benign cellular form of PrP (PrPC) consists of a globular domain of residues 126-231 with three alpha-helices and a short beta-sheet, and ...
متن کاملStructural studies of truncated forms of the prion protein PrP.
Prions are proteins that adopt self-propagating aberrant folds. The self-propagating properties of prions are a direct consequence of their distinct structures, making the understanding of these structures and their biophysical interactions fundamental to understanding prions and their related diseases. The insolubility and inherent disorder of prions have made their structures difficult to stu...
متن کاملNMR Structure and CD Titration with Metal Cations of Human Prion α2-Helix-Related Peptides
The 173-195 segment corresponding to the helix 2 of the C-globular prion protein domain could be one of several "spots" of intrinsic conformational flexibility. In fact, it possesses chameleon conformational behaviour and gathers several disease-associated point mutations. We have performed spectroscopic studies on the wild-type fragment 173-195 and on its D178N mutant dissolved in trifluoroeth...
متن کاملEnergy landscape of the prion protein helix 1 probed by metadynamics and NMR.
The characterization of the structural dynamics of proteins, including those that present a substantial degree of disorder, is currently a major scientific challenge. These dynamics are biologically relevant and govern the majority of functional and pathological processes. We exploited a combination of enhanced molecular simulations of metadynamics and NMR measurements to study heterogeneous st...
متن کاملEvidence for the role of PrP(C) helix 1 in the hydrophilic seeding of prion aggregates.
Prions are mammalian proteins (PrPs) with a unique pathogenic property: a nonendogenous isoform PrP(Sc) can catalyze conversion of the endogenous PrP(C) isoform into additional PrP(Sc). In this work, we demonstrate that PrP(C) helix 1 has certain properties (hydrophilicity, charge distribution) that make it unique among all naturally occurring alpha-helices, and which are indicative of a highly...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 2003
ISSN: 0021-9258
DOI: 10.1074/jbc.m305234200