Polymerization of the soluble beta-amyloid peptide into highly ordered fibrils is hypothesized to be a causative event in the development of Alzheimers Disease. Structural information of beta-amyloid fibril formation is fundamental for the development of diagnostics and therapeutic approaches, and in addition might be valuable for elucidating fundamental mechanisms of protein folding and assembly. Study of interactions of Abeta with inhibitors can provide important indirect information of the amyloid fibril structure. In this work, the structure of peptide inhibitors to Abeta fibril formation is studied with the aid of synthetic peptides and NMR spectroscopy, as well as Electron Microscopy and Circular Dichroism Spectroscopy. The short fragment of the beta-amyloid peptide Abeta14-23 and its peptide inhibitors iAbeta5 (LPFFD) and iAbeta5inv (DPFFL) are synthesized manually with and without 19F-, 13C- and 15N-labelling using standard Fmoc peptide synthesis protocols. Distance restraints for peptide inhibitors.
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Polymerization of the soluble beta-amyloid peptide into highly ordered fibrils is hypothesized to be a causative event in the development of Alzheimers Disease. Structural information of beta-amyloid fibril formation is fundamental for the development of diagnostics and therapeutic approaches, and in addition might be valuable for elucidating fundamental mechanisms of protein folding and assembly. Study of interactions of Abeta with inhibitors can provide important indirect information of the a...
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