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Regulation Of In Vitro Fibril Formation Of Synuclein Mutant Proteins By Hsp104p

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Hsp104p, as an anti-oxidative protector of ROS generation, was examined to inquire if it prevents aggregation of synuclein mutants, A30P or A53T upon aging, in vitro. The role of Hsp104p was also addressed in dissociation of pre-formed aggregates of synuclein mutants. Significant protection in fibril formation was observed by wild-type Hsp104p regardless of ATP presence, not by mutant Hsp104p. To a lesser extent, the dissociation effect of wild-type Hsp104p was observed only in the presence of ATP. These results will be discussed in relation to the development of an antioxidant approach to prevent amyloid fibril formation in several neurodegenerative diseases.

Keywords: aggregation; hsp104p; molecular chaperone; synuclein

Document Type: Review Article


Affiliations: Department of Applied Chemistry and Recombinant Protein Expression Center, Sejong University, 98 Gunja-Dong, Gwangjin-Gu, Seoul 143-747, South Korea.

Publication date: October 1, 2003

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  • Protein & Peptide Letters publishes short papers in all important aspects of protein and peptide research, including structural studies, recombinant expression, function, synthesis, enzymology, immunology, molecular modeling, drug design etc. Manuscripts must have a significant element of novelty, timeliness and urgency that merit rapid publication. Reports of crystallisation, and preliminary structure determinations of biologically important proteins are acceptable. Purely theoretical papers are also acceptable provided they provide new insight into the principles of protein/peptide structure and function.

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