Document Detail


Control of amyloid assembly by autoregulation.
MedLine Citation:
PMID:  23013511     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
The assembly of proteins into amyloid fibrils can be an element of both protein aggregation diseases and a functional unit in healthy biological pathways. In both cases, it must be kept under tight control to prevent undesired aggregation. In normophysiology, proteins can self-chaperone amyloidogenic segments by restricting their conformational flexibility in an overall stabilizing protein fold. However, some aggregation-prone segments cannot be controlled in this manner and require additional regulatory elements to limit fibrillation. The present review summarizes different molecular mechanisms that proteins use to control their own assembly into fibrils, such as the inclusion of a chaperoning domain or a blocking segment in the proform, the controlled release of an amyloidogenic region from the folded protein, or the adjustment of fibrillation propensity according to pH. Autoregulatory elements can control disease-related as well as functional fibrillar protein assemblies and distinguish a group of self-regulating amyloids across a wide range of biological functions and organisms.
Authors:
Michael Landreh; Jan Johansson; Anna Rising; Jenny Presto; Hans Jörnvall
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Biochemical journal     Volume:  447     ISSN:  1470-8728     ISO Abbreviation:  Biochem. J.     Publication Date:  2012 Oct 
Date Detail:
Created Date:  2012-09-27     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  2984726R     Medline TA:  Biochem J     Country:  England    
Other Details:
Languages:  eng     Pagination:  185-92     Citation Subset:  IM    
Affiliation:
*Department of Medical Biochemistry and Biophysics, Karolinska Institutet, S-171 77 Stockholm, Sweden.
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