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Curr Protein Pept Sci. 2010 Feb;11(1):54-67.

Conformations and biological activities of amyloid beta peptide 25-35.

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  • 1Department of Molecular Biology, University of Siena, Italy.


Amyloid-beta (Abeta) peptide is commonly found in human Alzheimer's disease (AD) brain and is the main component of Alzheimer amyloid plaques. The predominant forms of Abeta in the human brain are Abeta(1-40) and Abeta(1-42), but Abeta(25-35) fragment, physiologically present in elderly people, is the more toxic region and has been recently found to play a relevant role in AD, due to its peculiar aggregation properties. In this work, we review the current understanding on the conformations and biological activity of Abeta(25-35) exploring aggregation, cytotoxic and neurodegenerative properties of this fundamental Abeta fragment, in order to provide an effective starting point to better approach a pathology spread and problematic as AD.

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