A short water-soluble self-assembling peptide forms amyloid-like fibrils |
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| Authors: | Ray Sudipta Das Apurba K Drew Michael G B Banerjee Arindam |
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| Institution: | Department of Biological Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata, India. |
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| Abstract: | A water-soluble tripeptide Val-Ile-Ala (VIA) , bearing sequence identity with the C-terminal portion of the Alzheimer Abeta-peptide (Abeta(40-42)), self-assembles, in crystalline form, to produce an intermolecularly hydrogen bonded supramolecular beta-sheet structure which self-associates to form straight, unbranched nanofibrils exhibiting amyloid-like behavior; in contrast, the synthetic tripeptide Ala-Val-Ile (AVI) self-assembles to produce a beta-sheet structure that forms branched nanofibrils which do not show any characteristic features of amyloid-like fibrils. |
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