Cellular and Molecular Life Sciences CMLS

, Volume 61, Issue 5, pp 511–524

Amyloid fibrils from the viewpoint of protein folding

Review

Abstract

In amyloid related diseases, proteins form fibrillar aggregates with highly ordered β-sheet structure regardless of their native conformations. Formation of such amyloid fibrils can be reproducible in vitro using isolated proteins/peptides, suggesting that amyloid fibril formation takes place as a result of protein conformational change. In vitro studies revealed that perturbation of the native structure is important for the fibril formation, and it is suggested that the mechanisms of amyloid fibril formation share the mechanisms of protein folding. In particular, amyloid fibril formation is similar to one of the common features of proteins, i.e. amorphous aggregation upon partial unfolding, which is likely driven by hydrophobic interactions through exposed protein interior. However, these molecular associations are distinct phenomena, and identifying factors that lead to amyloid fibril formation would precede our understanding of the mechanisms of amyloid fibrillization. The necessity of understanding the nature of protein denatured states is also suggested.

Amyloid fibrils protein folding aggregation denatured states 

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Copyright information

© Birkhäuser-Verlag Basel 2004

Authors and Affiliations

  1. 1.Department of Biological ChemistryThe Johns Hopkins University School of MedicineBaltimoreUSA
  2. 2.Department of Material and Life Science, Graduate School of EngineeringOsaka University and PRESTO, Japan Science and Technology Agency (JST)OsakaJapan

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