Effects of alpha-synuclein post-translational modifications on metal binding

Area of Science:

• Neuroscience
• Biochemistry
• Pathology

Background:

• Parkinson's disease (PD) is a prevalent neurodegenerative disorder characterized by dopaminergic neuron loss and Lewy bodies containing α-synuclein.
• Disruptions in metal ion homeostasis are increasingly linked to neurodegenerative diseases.
• α-synuclein is a key protein in PD pathogenesis and interacts with metal ions.

Purpose of the Study:

• To review the interactions between α-synuclein and physiologically relevant metal ions.
• To highlight how metal-α-synuclein interactions modulate protein structure, aggregation, and membrane binding.
• To discuss the influence of post-translational modifications (PTMs) on metal binding and α-synuclein function in PD.

Main Methods:

• Literature review focusing on metal-α-synuclein interactions.
• Analysis of studies investigating the structural and functional consequences of metal binding.
• Examination of the role of PTMs like phosphorylation and N-terminal acetylation.

Main Results:

• Metal-α-synuclein interactions are critical regulators of α-synuclein aggregation and structure.
• Metal binding influences α-synuclein's membrane association properties.
• PTMs, including phosphorylation and N-terminal acetylation, impact metal-binding affinity and function.

Conclusions:

• Metal ion dyshomeostasis and α-synuclein aggregation are interconnected in Parkinson's disease.
• Understanding metal-α-synuclein interactions is crucial for elucidating PD pathogenesis.
• The interplay between PTMs and metal binding offers potential therapeutic targets for Parkinson's disease.