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Peptides as Modulators of α-Synuclein Aggregation

[ Vol. 22 , Issue. 4 ]


Paolo Ruzza, Matteo Gazziero, Maria De Marchi, Giada Massalongo, Anna Marchiani, Ida Autiero, Isabella Tessari, Luigi Bubacco and Andrea Cald   Pages 354 - 361 ( 8 )


α-Synuclein forms amyloid deposits in the dopaminergic neurons; a process that is believed to contribute to the Parkinson’s disease. An emerging theme in amyloid research is the hypothesis that the toxic species produced during amyloid formation share common physic-chemical features and exert their effects by common modes. This prompted the idea that molecules able to inhibit a protein aggregation process may cross-react with other amyloidogenic proteins, interfering in their fibrils formation. We investigate the ability of analogues of the heptapeptide H-Arg-Lys-Val-MePhe-Tyr-Thr-Trp- OH2, an inhibitor of Aβ-peptide aggregation, to cross-react with α-synuclein interfering with its fibril formation. The influence of the MePhe topography on the interaction with α-synuclein has also been evaluated, replacing the MePhe residue with either Phe or the conformationally restricted Tic residues. Peptides interact with good affinity with the


α-synuclein, β-breaker peptides, conformational constraints, protein-peptide interaction.


Biomolecular Chemistry of CNR, Padova Unit, Via F. Marzolo n.1 - 33131 Padova, Italy.

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