Characterization of β-domains in C-terminal fragments of TDP-43 by scanning tunneling microscopy.
Characterization of β-domains in C-terminal fragments of TDP-43 by scanning tunneling microscopy.
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通过扫描隧道显微镜的TDP-43 C末端片段中β-域的表征。
DOI:
10.1016/j.jsb.2012.10.011
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发表时间:
2013-01
影响因子:
3
通讯作者:
Wang, Chen
中科院分区:
文献类型:
--
作者:
Xu, Meng;Zhu, Li;Liu, Jianghong;Yang, Yanlian;Wu, Jane Y.;Wang, Chen
The TAR DNA-binding protein 43 (TDP-43) has been identified as a critical player in a range of neurodegenerative diseases, including frontotemporal lobar degeneration (FTLD) and amyotrophic lateral sclerosis (ALS). Recent discoveries demonstrate the important role of carboxyl-terminal fragments of TDP-43 in its proteinopathy. Herein, we report the characterization of β-domains in the C-terminal fragments of TDP-43 using scanning tunneling microscopy (STM). Careful comparison of the wild-type TDP-43 (Wt) and the three mutant TDP-43 peptides: an ALS-related mutant peptide: phosphorylated A315T mutant TDP-43 (A315T(p)) and two model peptides: A315T mutant TDP-43 (A315T), A315E mutant TDP-43 (A315E) reveals that A315T(p) has a longer core region of the β-domain than Wt. A315E possesses the longest core region of the β-domain and A315T(p) mutant TDP-43 has the second longest core region of the β-domain. The core regions of the β-domains for A315T and Wt TDP-43 have the same length. This observation provides a supportive evidence of a higher tendency in beta-sheet formation of A315T(p) containing TDP-43 fragment, and structural mechanism for the higher cytotoxicity and accelerated fibril formation of the A315T(p) mutation-containing TDP-43 peptide as compared with Wt TDP-43.
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影响因子:
38.1
作者:
Chen-Plotkin, Alice S.;Lee, Virginia M. -Y.;Trojanowski, John Q.
通讯作者:
Trojanowski, John Q.
影响因子:
17.1
作者:
Liu, Lei;Zhang, Lan;Wang, Chen
通讯作者:
Wang, Chen
影响因子:
4.9
作者:
Wang, Chenxuan;Mao, Xiaobo;Wang, Chen
通讯作者:
Wang, Chen
影响因子:
14.9
作者:
Kuo PH;Doudeva LG;Wang YT;Shen CK;Yuan HS
通讯作者:
Yuan HS
影响因子:
12.7
作者:
Mackenzie IR;Neumann M;Bigio EH;Cairns NJ;Alafuzoff I;Kril J;Kovacs GG;Ghetti B;Halliday G;Holm IE;Ince PG;Kamphorst W;Revesz T;Rozemuller AJ;Kumar-Singh S;Akiyama H;Baborie A;Spina S;Dickson DW;Trojanowski JQ;Mann DM
通讯作者:
Mann DM