Assembly mechanism of early Hsp90-Cdc37-kinase complexes.
Assembly mechanism of early Hsp90-Cdc37-kinase complexes.
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早期hsp90 - cdc37激酶复合物的组装机制。
DOI:
10.1126/sciadv.abm9294
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发表时间:
2022-03-18
期刊:
影响因子:
13.6
通讯作者:
Gelis I
中科院分区:
文献类型:
--
作者:
Keramisanou D;Vasantha Kumar MV;Boose N;Abzalimov RR;Gelis I
Molecular chaperones have an essential role for the maintenance of a balanced protein homeostasis. Here, we investigate how protein kinases are recruited and loaded to the Hsp90-Cdc37 complex, the first step during Hsp90-mediated chaperoning that leads to enhanced client kinase stability and activation. We show that conformational dynamics of all partners is a critical feature of the underlying loading mechanism. The kinome co-chaperone Cdc37 exists primarily in a dynamic extended conformation but samples a low-populated, well-defined compact structure. Exchange between these two states is maintained in an assembled Hsp90-Cdc37 complex and is necessary for substrate loading. Breathing motions at the N-lobe of a free kinase domain partially expose the kinase segment trapped in the Hsp90 dimer downstream in the cycle. Thus, client dynamics poise for chaperone dependence. Hsp90 is not directly involved during loading, and Cdc37 is assigned the task of sensing clients by stabilizing the preexisting partially unfolded client state. Conformational dynamics facilitate kinase loading to Hsp90.
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影响因子:
64.5
作者:
Kirschke E;Goswami D;Southworth D;Griffin PR;Agard DA
通讯作者:
Agard DA
影响因子:
64.5
作者:
Karagöz GE;Duarte AM;Akoury E;Ippel H;Biernat J;Morán Luengo T;Radli M;Didenko T;Nordhues BA;Veprintsev DB;Dickey CA;Mandelkow E;Zweckstetter M;Boelens R;Madl T;Rüdiger SG
通讯作者:
Rüdiger SG
DOI:
10.1073/pnas.0707330105
发表时间:
2008-01-15
影响因子:
11.1
作者:
Du, Shao Jun;Li, Huiqing;Zhong, Yongwang
通讯作者:
Zhong, Yongwang
影响因子:
4.8
作者:
Hernández, MP;Sullivan, WP;Toft, DO
通讯作者:
Toft, DO
影响因子:
16.6
作者:
Bachman AB;Keramisanou D;Xu W;Beebe K;Moses MA;Vasantha Kumar MV;Gray G;Noor RE;van der Vaart A;Neckers L;Gelis I
通讯作者:
Gelis I