Common Fibril Structures Imply Systemically Conserved Protein Misfolding Pathways In Vivo

Karthikeyan Annamalai, Falk Liberta, Marie Theres Vielberg, William Close, Hauke Lilie, Karl Heinz Gührs, Angelika Schierhorn, Rolf Koehler, Andreas Schmidt, Christian Haupt, Ute Hegenbart, Stefan Schönland, Matthias Schmidt, Michael Groll, Marcus Fändrich

Research output: Contribution to journalArticlepeer-review

54 Scopus citations

Abstract

Systemic amyloidosis is caused by the misfolding of a circulating amyloid precursor protein and the deposition of amyloid fibrils in multiple organs. Chemical and biophysical analysis of amyloid fibrils from human AL and murine AA amyloidosis reveal the same fibril morphologies in different tissues or organs of one patient or diseased animal. The observed structural similarities concerned the fibril morphology, the fibril protein primary and secondary structures, the presence of post-translational modifications and, in case of the AL fibrils, the partially folded characteristics of the polypeptide chain within the fibril. Our data imply for both analyzed forms of amyloidosis that the pathways of protein misfolding are systemically conserved; that is, they follow the same rules irrespective of where inside one body fibrils are formed or accumulated.

Original languageEnglish
Pages (from-to)7510-7514
Number of pages5
JournalAngewandte Chemie International Edition in English
Volume56
Issue number26
DOIs
StatePublished - 19 Jun 2017

Keywords

  • Alzheimer's disease
  • Parkinson's disease
  • conformational disease
  • prions
  • protein aggregation

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