Two prion variants of Sup35p have in-register parallel beta-sheet structures, independent of hydration.
Two prion variants of Sup35p have in-register parallel beta-sheet structures, independent of hydration.
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DOI:
10.1021/bi900345q
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发表时间:
2009-06-16
期刊:
影响因子:
2.9
通讯作者:
Wickner, Reed B.
中科院分区:
文献类型:
--
作者:
Shewmaker, Frank;Kryndushkin, Dmitry;Chen, Bo;Tycko, Robert;Wickner, Reed B.
The [PSI+] prion is a self-propagating amyloid of the Sup35 protein, normally a subunit of the translation termination factor, but impaired in this vital function when in the amyloid form. The Sup35 N, M and C domains are the amino-terminal prion domain, a connecting polar domain and the essential C-terminal domain resembling eukaryotic elongation factor 1alpha, respectively. Different [PSI+] isolates (prion variants) may have distinct biological properties, associated with different amyloid structures. Here we use solid state NMR to examine the structure of infectious Sup35NM amyloid fibrils of two prion variants. We find that both variants have an in-register parallel β - sheet structure, both in fully hydrated and in lyophilized form. Moreover, we confirm that some leucine residues in the M domain participate in the in-register parallel β-sheet structure. Transmission of the [PSI+] prion by amyloid fibrils of Sup35NM and of the [URE3] prion by amyloid fibrils of recombinant full length Ure2p are similar whether they have been lyophilized or not (wet or dry).
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影响因子:
30.8
作者:
Du, Zhiqiang;Park, Kyung-Won;Li, Liming
通讯作者:
Li, Liming
影响因子:
4.4
作者:
BENNETT, AE;RIENSTRA, CM;GRIFFIN, RG
通讯作者:
GRIFFIN, RG
影响因子:
2.9
作者:
Baxa, Ulrich;Wickner, Reed B.;Tycko, Robert
通讯作者:
Tycko, Robert
影响因子:
5.6
作者:
King, CY
通讯作者:
King, CY
DOI:
10.1073/pnas.95.23.13407
发表时间:
1998-11-10
影响因子:
11.1
作者:
Benzinger, TLS;Gregory, DM;Meredith, SC
通讯作者:
Meredith, SC