Format

Send to

Choose Destination
Neural Regen Res. 2020 Mar;15(3):407-415. doi: 10.4103/1673-5374.265792.

Navigating the dynamic landscape of alpha-synuclein morphology: a review of the physiologically relevant tetrameric conformation.

Author information

1
Department of Chemistry, Virginia Commonwealth University, Richmond, VA, USA.

Abstract

N-acetylated α-synuclein (αSyn) has long been established as an intrinsically disordered protein associated with a dysfunctional role in Parkinson's disease. In recent years, a physiologically relevant, higher order conformation has been identified as a helical tetramer that is tailored by buried hydrophobic interactions and is distinctively aggregation resistant. The canonical mechanism by which the tetramer assembles remains elusive. As novel biochemical approaches, computational methods, pioneering purification platforms, and powerful imaging techniques continue to develop, puzzling information that once sparked debate as to the veracity of the tetramer has now shed light upon this new counterpart in αSyn neurobiology. Nuclear magnetic resonance and computational studies on multimeric αSyn structure have revealed that the protein folding propensity is controlled by small energy barriers that enable large scale reconfiguration. Alternatively, familial mutations ablate tetramerization and reconfigure polymorphic fibrillization. In this review, we will discuss the dynamic landscape of αSyn quaternary structure with a focus on the tetrameric conformation.

KEYWORDS:

N-acetylation; Parkinson’s disease; alpha-synuclein; amyloid fibrils; intrinsically disordered protein; multimer; oligomer; protein folding; protein structure; tetramer

PMID:
31571649
DOI:
10.4103/1673-5374.265792
Free full text

Supplemental Content

Full text links

Icon for Medknow Publications and Media Pvt Ltd
Loading ...
Support Center