Cryo-EM structure of amyloid fibrils formed by the entire low complexity domain of TDP-43.
Cryo-EM structure of amyloid fibrils formed by the entire low complexity domain of TDP-43.
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由TDP-43的整个低复杂性结构域形成的淀粉样蛋白原纤维的冷冻-EM结构。
DOI:
10.1038/s41467-021-21912-y
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发表时间:
2021-03-12
影响因子:
16.6
通讯作者:
Surewicz WK
中科院分区:
文献类型:
--
作者:
Li Q;Babinchak WM;Surewicz WK
Amyotrophic lateral sclerosis and several other neurodegenerative diseases are associated with brain deposits of amyloid-like aggregates formed by the C-terminal fragments of TDP-43 that contain the low complexity domain of the protein. Here, we report the cryo-EM structure of amyloid formed from the entire TDP-43 low complexity domain in vitro at pH 4. This structure reveals single protofilament fibrils containing a large (139-residue), tightly packed core. While the C-terminal part of this core region is largely planar and characterized by a small proportion of hydrophobic amino acids, the N-terminal region contains numerous hydrophobic residues and has a non-planar backbone conformation, resulting in rugged surfaces of fibril ends. The structural features found in these fibrils differ from those previously found for fibrils generated from short protein fragments. The present atomic model for TDP-43 LCD fibrils provides insight into potential structural perturbations caused by phosphorylation and disease-related mutations. Amyotrophic lateral sclerosis (ALS) and frontotemporal lobar degeneration (FTLD) patients have brain deposits with amyloid-like aggregates from large C-terminal fragments of the transactive response DNA-binding protein of 43 kDa (TDP-43). Here, the authors present the cryo-EM structure of amyloid fibrils generated from the complete C-terminal TDP-43 low complexity domain and they discuss the effects of disease-causing mutations and phosphorylation of specific Ser residues.
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影响因子:
16.6
作者:
Lee M;Ghosh U;Thurber KR;Kato M;Tycko R
通讯作者:
Tycko R
影响因子:
7.1
作者:
Fatima M;Tan R;Halliday GM;Kril JJ
通讯作者:
Kril JJ
DOI:
10.1126/science.aao2825
发表时间:
2017-10-06
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Gremer L;Schölzel D;Schenk C;Reinartz E;Labahn J;Ravelli RBG;Tusche M;Lopez-Iglesias C;Hoyer W;Heise H;Willbold D;Schröder GF
通讯作者:
Schröder GF
影响因子:
4.8
作者:
Babinchak, W. Michael;Haider, Raza;Surewicz, Witold K.
通讯作者:
Surewicz, Witold K.
影响因子:
16.8
作者:
Cao, Qin;Boyer, David R.;Eisenberg, David S.
通讯作者:
Eisenberg, David S.