Physical basis of amyloid fibril polymorphism.
Physical basis of amyloid fibril polymorphism.
复制标题
DOI:
10.1038/s41467-018-03164-5
复制
发表时间:
2018-02-16
影响因子:
16.6
通讯作者:
Fändrich M
中科院分区:
文献类型:
--
作者:
Close W;Neumann M;Schmidt A;Hora M;Annamalai K;Schmidt M;Reif B;Schmidt V;Grigorieff N;Fändrich M
Polymorphism is a key feature of amyloid fibril structures but it remains challenging to explain these variations for a particular sample. Here, we report electron cryomicroscopy-based reconstructions from different fibril morphologies formed by a peptide fragment from an amyloidogenic immunoglobulin light chain. The observed fibril morphologies vary in the number and cross-sectional arrangement of a structurally conserved building block. A comparison with the theoretically possible constellations reveals the experimentally observed spectrum of fibril morphologies to be governed by opposing sets of forces that primarily arise from the β-sheet twist, as well as peptide–peptide interactions within the fibril cross-section. Our results provide a framework for rationalizing and predicting the structure and polymorphism of cross-β fibrils, and suggest that a small number of physical parameters control the observed fibril architectures. Amyloid fibril structures can display polymorphism. Here the authors reveal the cryo-EM structures of several different fibril morphologies of a peptide derived from an amyloidogenic immunoglobulin light chain and present a mathematical analysis of physical factors that influence fibril polymorphism.
登录
查看更多内容
影响因子:
5.6
作者:
Meinhardt J;Sachse C;Hortschansky P;Grigorieff N;Fändrich M
通讯作者:
Fändrich M
影响因子:
4.3
作者:
Bryan AW Jr;Menke M;Cowen LJ;Lindquist SL;Berger B
通讯作者:
Berger B
DOI:
10.1093/bioinformatics/btr238
发表时间:
2011-07-01
期刊:
Bioinformatics (Oxford, England)
影响因子:
--
作者:
O'Donnell CW;Waldispühl J;Lis M;Halfmann R;Devadas S;Lindquist S;Berger B
通讯作者:
Berger B
DOI:
10.1073/pnas.142459399
发表时间:
2002-07-09
影响因子:
11.1
作者:
Jimenez, JL;Nettleton, EJ;Saibil, HR
通讯作者:
Saibil, HR
影响因子:
2.8
作者:
Grommek, Andreas;Meier, Beat H.;Ernst, Matthias
通讯作者:
Ernst, Matthias