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Atomic structures of corkscrew‐forming segments of SOD1 reveal varied oligomer conformations

Journal Article · · Protein Science
DOI:https://doi.org/10.1002/pro.3391· OSTI ID:1425503
 [1];  [1];  [1];  [1];  [1]
  1. Department of Biological Chemistry Los Angeles Howard Hughes Medical Institute, UCLA‐DOE and Molecular Biology Institute California
Abstract

The aggregation cascade of disease‐related amyloidogenic proteins, terminating in insoluble amyloid fibrils, involves intermediate oligomeric states. The structural and biochemical details of these oligomers have been largely unknown. Here we report crystal structures of variants of the cytotoxic oligomer‐forming segment residues 28–38 of the ALS‐linked protein, SOD1. The crystal structures reveal three different architectures: corkscrew oligomeric structure, nontwisting curved sheet structure and a steric zipper proto‐filament structure. Our work highlights the polymorphism of the segment 28–38 of SOD1 and identifies the molecular features of amyloidogenic entities.

Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1425503
Alternate ID(s):
OSTI ID: 1459975
Journal Information:
Protein Science, Journal Name: Protein Science Journal Issue: 7 Vol. 27; ISSN 0961-8368
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
United Kingdom
Language:
English

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