Fusion protein analysis reveals the precise regulation between Hsp70 and Hsp100 during protein disaggregation.
Fusion protein analysis reveals the precise regulation between Hsp70 and Hsp100 during protein disaggregation.
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DOI:
10.1038/s41598-017-08917-8
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发表时间:
2017-08-17
影响因子:
4.6
通讯作者:
Watanabe YH
中科院分区:
文献类型:
--
作者:
Hayashi S;Nakazaki Y;Kagii K;Imamura H;Watanabe YH
ClpB, a bacterial Hsp100, is a ring-shaped AAA+ chaperone that can reactivate aggregated proteins in cooperation with DnaK, a bacterial Hsp70, and its co-factors. ClpB subunits comprise two AAA+ modules with an interstitial rod-shaped M-domain. The M-domain regulates ClpB ATPase activity and interacts directly with the DnaK nucleotide-binding domain (NBD). Here, to clarify how these functions contribute to the disaggregation process, we constructed ClpB, DnaK, and aggregated YFP fusion proteins in various combinations. Notably, i) DnaK activates ClpB only when the DnaK substrate-binding domain (SBD) is in the closed conformation, affording high DnaK-peptide affinity; ii) although NBD alone can activate ClpB, SBD is required for disaggregation; and iii) tethering aggregated proteins to the activated ClpB obviates SBD requirements. These results indicate that DnaK activates ClpB only when the SBD tightly holds aggregated proteins adjacent to ClpB for effective disaggregation.
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影响因子:
16
作者:
Kityk, Roman;Kopp, Juergen;Mayer, Matthias P.
通讯作者:
Mayer, Matthias P.
影响因子:
4.8
作者:
Lipinska, Natalia;Zietkiewicz, Szymon;Liberek, Krzysztof
通讯作者:
Liberek, Krzysztof
DOI:
10.1073/pnas.0903503106
发表时间:
2009-05-26
影响因子:
11.1
作者:
Bertelsen, Eric B.;Chang, Lyra;Zuiderweg, Erik R. P.
通讯作者:
Zuiderweg, Erik R. P.
影响因子:
4.8
作者:
Barnett, ME;Nagy, M;Zolkiewski, M
通讯作者:
Zolkiewski, M
影响因子:
5
作者:
Franke, Kamila B.;Bukau, Bernd;Mogk, Axel
通讯作者:
Mogk, Axel