Abstract
Parkinson's Disease is characterized by the presence of fibrillar deposits of alpha-Synuclein (αS) in the substantia nigra. αS is an intrinsically unstructured protein that becomes α-helical upon binding lipid membranes. Many studies indicate that the toxic form of αS may be pre-fibrillar oligomers formed in solution or upon binding to cell membranes or synaptic vesicles. The effects of curvature and lipid composition on αS binding were studied by using Fluorescence Correlation Spectroscopy (FCS) to quantitatively measure the binding affinity of αS for synthetic lipid vesicles.
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