Small heat shock protein AgsA forms dynamic fibrils | |
Shi, Xiaodong ; Wang, Zhao ; Yan, Linxuan ; Ezemaduka, Anastasia N. ; Fan, Guizhen ; Wang, Rui ; Fu, Xinmiao ; Yin, Changcheng ; Chang, Zengyi | |
刊名 | 欧洲生化学会联合会快报 |
2011 | |
关键词 | Small heat shock protein Chaperone Fibril Amyloid Electron microscopy Cryo-electron tomography CHAPERONE-LIKE ACTIVITY ESCHERICHIA-COLI BIOCHEMICAL-CHARACTERIZATION DENATURED PROTEIN CRYSTAL-STRUCTURE ALPHA-CRYSTALLIN AMYLOID FIBRILS IN-VITRO IBPB BINDING |
DOI | 10.1016/j.febslet.2011.09.042 |
英文摘要 | As a class of molecular chaperones, small heat shock proteins (sHsps) usually exist as multi-subunit spherical oligomers. In this study, we report that AgsA, a sHsp of Salmonella enterica serovar Typhimurium, spontaneously forms fibrils in vitro. These fibrils tend to be formed at elevated temperature and do not share the characteristics of amyloid. Interestingly, the fibril-forming AgsA is able to suppress the dithiothreitol-induced aggregation of insulin efficiently within a certain range of temperature. During this process, AgsA fibrils disappear and spherical complexes form between AgsA and insulin molecules. These data suggest that AgsA fibrils may represent a distinctive type of structural and functional form of sHsp from spherical oligomers. Our study provides new insights into sHsp structures and chaperone functions. Structured summary of protein interactions: AgsA and AgsA bind by electron microscopy (View interaction). Insulin and Insulin bind by molecular sieving (View interaction). Insulin and Insulin bind by electron microscopy (View interaction). AgsA and AgsA bind by molecular sieving (View interaction). AgsA and AgsA bind by fluorescence technology (View interaction). AgsA and AgsA bind by circular dichroism (View interaction). Insulin and Insulin bind by fluorescence technology (View interaction). AgsA and Insulin bind by molecular sieving (View interaction). AgsA and AgsA bind by electron tomography (View interaction). (C) 2011 Federation of European Biochemical Societies. Published by Elsevier B. V. All rights reserved.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000296575400008&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Biochemistry & Molecular Biology; Biophysics; Cell Biology; SCI(E); PubMed; 7; ARTICLE; 21; 3396-3402; 585 |
语种 | 英语 |
内容类型 | 期刊论文 |
源URL | [http://ir.pku.edu.cn/handle/20.500.11897/193813] |
专题 | 生命科学学院 |
推荐引用方式 GB/T 7714 | Shi, Xiaodong,Wang, Zhao,Yan, Linxuan,et al. Small heat shock protein AgsA forms dynamic fibrils[J]. 欧洲生化学会联合会快报,2011. |
APA | Shi, Xiaodong.,Wang, Zhao.,Yan, Linxuan.,Ezemaduka, Anastasia N..,Fan, Guizhen.,...&Chang, Zengyi.(2011).Small heat shock protein AgsA forms dynamic fibrils.欧洲生化学会联合会快报. |
MLA | Shi, Xiaodong,et al."Small heat shock protein AgsA forms dynamic fibrils".欧洲生化学会联合会快报 (2011). |
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