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一种从G85R突变蛋白组装体的挫折分析中推导得出的SOD1错误折叠传播机制。

A mechanism for propagated SOD1 misfolding from frustration analysis of a G85R mutant protein assembly.

作者信息

Healy Eamonn F

机构信息

Department of Chemistry, St. Edward's University, Austin, TX 78704, USA.

出版信息

Biochem Biophys Res Commun. 2016 Sep 30;478(4):1634-9. doi: 10.1016/j.bbrc.2016.08.172. Epub 2016 Aug 31.

DOI:10.1016/j.bbrc.2016.08.172
PMID:27591900
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5030186/
Abstract

Application of landscape theory and the dehydron hypothesis to a crystal structure of a G85R mutant superoxide dismutase (SOD1) tetrameric complex allows for the description of a prion-like hypothesis that serves to explain propagated SOD1 misfolding. We have developed two conformational-change scenarios, one local to the ESL at the complex interface, and a second displacement at the ESL of the otherdimeric subunit. When taken together these provide for a prion-like mechanism that can serve to explain the observed conversion of wtSOD1 to a misfolded form by the G85R mutant.

摘要

将景观理论和脱氢子假说应用于G85R突变超氧化物歧化酶(SOD1)四聚体复合物的晶体结构,有助于描述一种类朊病毒假说,该假说用于解释SOD1错误折叠的传播。我们已经开发了两种构象变化情景,一种是复合物界面处ESL的局部变化,另一种是另一个二聚体亚基ESL的位移。综合起来,这些情景提供了一种类朊病毒机制,可用于解释观察到的野生型SOD1被G85R突变体转化为错误折叠形式的现象。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2e5c/5030186/8fd2b5801668/nihms814803f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2e5c/5030186/3692b6da1f1e/nihms814803f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2e5c/5030186/68f4cc11c804/nihms814803f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2e5c/5030186/259d1de23b7c/nihms814803f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2e5c/5030186/8fd2b5801668/nihms814803f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2e5c/5030186/3692b6da1f1e/nihms814803f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2e5c/5030186/68f4cc11c804/nihms814803f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2e5c/5030186/259d1de23b7c/nihms814803f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2e5c/5030186/8fd2b5801668/nihms814803f4.jpg

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PLoS One. 2017 May 4;12(5):e0177284. doi: 10.1371/journal.pone.0177284. eCollection 2017.

本文引用的文献

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Eur Biophys J. 2016 Dec;45(8):853-859. doi: 10.1007/s00249-016-1163-9. Epub 2016 Aug 5.
2
A model for non-obligate oligomer formation in protein aggregration.蛋白质聚集过程中非必需寡聚体形成的模型。
Biochem Biophys Res Commun. 2015 Sep 25;465(3):523-7. doi: 10.1016/j.bbrc.2015.08.052. Epub 2015 Aug 15.
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Thermal fluctuations of immature SOD1 lead to separate folding and misfolding pathways.
未成熟超氧化物歧化酶1(SOD1)的热波动会导致不同的折叠和错误折叠途径。
Elife. 2015 Jun 23;4:e07296. doi: 10.7554/eLife.07296.
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From molecule to molecule and cell to cell: prion-like mechanisms in amyotrophic lateral sclerosis.从分子到分子,从细胞到细胞:肌萎缩侧索硬化症中的朊病毒样机制。
Neurobiol Dis. 2015 May;77:257-65. doi: 10.1016/j.nbd.2015.02.009. Epub 2015 Feb 17.
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Conformational specificity of the C4F6 SOD1 antibody; low frequency of reactivity in sporadic ALS cases.C4F6 SOD1 抗体的构象特异性;散发型 ALS 病例中的低反应频率。
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