Prion Protein Oligomerization

Author(s): H. Rezaei.

Journal Name: Current Alzheimer Research

Volume 5 , Issue 6 , 2008

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Abstract:

The PrP propensity to adopt different structures is tightly linked to transmissible spongiform encephalopathies (TSE) which include Creutzfeldt-Jakob disease (CJD), Gerstmann-Straussler-Scjeinker (GSS) and Kuru syndrome. In most cases, TSE is associated with the accumulation in the brain of an abnormally folded protease-resistant protein, PrPSc or PrPres, which is derived from a cellular host-encoded protease-sensitive conformer, designated PrPC. The prion propagation in the brain is postulated to occur via a conformational change of PrPC into the amyloidogenic form PrPSc, characterized by a high β sheet content. The characterization of PrPSC oligomers as well as their biological activity is currently an area of active research. Indeed, PrPSc structural diversity was proposed several years ago as a hypothesis to explain the origin of “prion strain” diversity. As prion pathologies belong to protein miss-assembly diseases, investigation of PrP conformational dynamics and, more precisely, oligomerization pathways exploration will help to acheave a better understanding of the pathological events at the molecular level.

Keywords: transmissible spongiform encephalopathies, kinetic intermediate, oligomerization, soluble oligomers, protein misassembly, amyloid, catalyse, nucleus, seed

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Article Details

VOLUME: 5
ISSUE: 6
Year: 2008
Page: [572 - 578]
Pages: 7
DOI: 10.2174/156720508786898497
Price: $58

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