SGTA interacts with the proteasomal ubiquitin receptor Rpn13 via a carboxylate clamp mechanism.
SGTA interacts with the proteasomal ubiquitin receptor Rpn13 via a carboxylate clamp mechanism.
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DOI:
10.1038/srep36622
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发表时间:
2016-11-09
影响因子:
4.6
通讯作者:
Isaacson RL
中科院分区:
文献类型:
--
作者:
Thapaliya A;Nyathi Y;Martínez-Lumbreras S;Krysztofinska EM;Evans NJ;Terry IL;High S;Isaacson RL
The fate of secretory and membrane proteins that mislocalize to the cytosol is decided by a collaboration between cochaperone SGTA (small, glutamine-rich, tetratricopeptide repeat protein alpha) and the BAG6 complex, whose operation relies on multiple transient and subtly discriminated interactions with diverse binding partners. These include chaperones, membrane-targeting proteins and ubiquitination enzymes. Recently a direct interaction was discovered between SGTA and the proteasome, mediated by the intrinsic proteasomal ubiquitin receptor Rpn13. Here, we structurally and biophysically characterize this binding and identify a region of the Rpn13 C-terminal domain that is necessary and sufficient to facilitate it. We show that the contact occurs through a carboxylate clamp-mediated molecular recognition event with the TPR domain of SGTA, and provide evidence that the interaction can mediate the association of Rpn13 and SGTA in a cellular context.
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影响因子:
3.7
作者:
Darby JF;Krysztofinska EM;Simpson PJ;Simon AC;Leznicki P;Sriskandarajah N;Bishop DS;Hale LR;Alfano C;Conte MR;Martínez-Lumbreras S;Thapaliya A;High S;Isaacson RL
通讯作者:
Isaacson RL
DOI:
10.1107/s1399004714026662
发表时间:
2015-01-01
期刊:
Acta crystallographica. Section D, Biological crystallography
影响因子:
--
作者:
Skinner SP;Goult BT;Fogh RH;Boucher W;Stevens TJ;Laue ED;Vuister GW
通讯作者:
Vuister GW
影响因子:
5.4
作者:
Kikukawa, Y;Minami, R;Kawahara, H
通讯作者:
Kawahara, H
影响因子:
16
作者:
VanderLinden, Ryan T.;Hemmis, Casey W.;Schmitt, Benjamin;Ndoja, Ada;Whitby, Frank G.;Robinson, Howard;Cohen, Robert E.;Yao, Tingting;Hill, Christopher P.
通讯作者:
Hill, Christopher P.
影响因子:
4
作者:
Leznicki P;Korac-Prlic J;Kliza K;Husnjak K;Nyathi Y;Dikic I;High S
通讯作者:
High S