An in silico study of the effect of SOD1 electrostatic loop dynamics on amyloid‑like filament formation.
An in silico study of the effect of SOD1 electrostatic loop dynamics on amyloid‑like filament formation.
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DOI:
10.1007/s00249-016-1163-9
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发表时间:
2016-12
影响因子:
2
通讯作者:
Cervantes, Luis
中科院分区:
文献类型:
--
作者:
Healy, Eamonn F.;Cervantes, Luis
Superoxide dismutase [Cu–Zn], or SOD1, is a homo-dimeric protein that functions as an antioxidant by scavenging for superoxides. A wide range of SOD1 variants are linked to inherited, or familial, amyotrophic lateral sclerosis, a progressive and fatal neurodegenerative disease. Aberrant SOD1 oligomerization has been strongly implicated in disease causation, even for sporadic ALS, or SALS, which accounts for ~90 % of ALS cases. Small heat shock proteins (sHSP) have been shown to protect against amyloid fibril formation in vitro, and the sHSP αB-crystallin suppresses in vitro aggregation of SOD1. We are seeking to elucidate the structural features of both SOD1 amyloid formation and αB-crystallin amyloid suppression. Specifically, we have used a flexible docking protocol to refine our model of a SOD1 non-obligate tetramer, postulated to function as a transient desolvating complex. Homology modeling and molecular dynamics (MD) are used to supply the missing structural elements of a previously characterized SOD1 amyloid filament, thereby providing a structural analysis for the observed gain of interaction. This completed filament is then further modified using MD to provide a structural model for protofibril capping of SOD1 filaments by αB-crystallin.
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影响因子:
3.4
作者:
Fernández, A;Scott, R
通讯作者:
Scott, R
影响因子:
5.6
作者:
Gu, LX;Abulimiti, A;Chang, ZY
通讯作者:
Chang, ZY
影响因子:
3
作者:
BROOKS, BR;BRUCCOLERI, RE;KARPLUS, M
通讯作者:
KARPLUS, M
影响因子:
4.5
作者:
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通讯作者:
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DOI:
10.1038/nsb935
发表时间:
2003-06-01
期刊:
NATURE STRUCTURAL BIOLOGY
影响因子:
--
作者:
Elam, JS;Taylor, AB;Hart, PJ
通讯作者:
Hart, PJ