Allosteric sensitization of proapoptotic BAX.
Allosteric sensitization of proapoptotic BAX.
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DOI:
10.1038/nchembio.2433
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发表时间:
2017-09
影响因子:
14.8
通讯作者:
Walensky LD
中科院分区:
文献类型:
--
作者:
Pritz JR;Wachter F;Lee S;Luccarelli J;Wales TE;Cohen DT;Coote P;Heffron GJ;Engen JR;Massefski W;Walensky LD
BAX is a critical apoptotic regulator that can be transformed from a cytosolic monomer into a lethal mitochondrial oligomer, yet drug strategies to modulate it are underdeveloped due to longstanding difficulties in conducting screens on this aggregation-prone protein. Here, we overcame prior challenges and performed an NMR-based fragment screen of full-length human BAX. We identified a compound that sensitizes BAX activation by binding to a pocket formed by the junction of the α3/α4 and α5/α6 hairpins. Biochemical and structural analyses revealed that the molecule sensitizes BAX by allosterically mobilizing the α1–α2 loop and BAX BH3 helix, two motifs implicated in the activation and oligomerization of BAX, respectively. By engaging a region of core hydrophobic interactions that otherwise preserve the BAX inactive state, the identified compound informs fundamental mechanisms for conformational regulation of BAX and provides a new opportunity to reduce the apoptotic threshold for potential therapeutic benefit.
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影响因子:
--
作者:
Cohen NA;Stewart ML;Gavathiotis E;Tepper JL;Bruekner SR;Koss B;Opferman JT;Walensky LD
通讯作者:
Walensky LD
影响因子:
7.8
作者:
Goping, I S;Gross, A;Lavoie, J N;Nguyen, M;Jemmerson, R;Roth, K;Korsmeyer, S J;Shore, G C
通讯作者:
Shore, G C
影响因子:
16
作者:
Barclay, Lauren A.;Wales, Thomas E.;Garner, Thomas P.;Wachter, Franziska;Lee, Susan;Guerra, Rachel M.;Stewart, Michelle L.;Braun, Craig R.;Bird, Gregory H.;Gavathiotis, Evripidis;Engen, John R.;Walensky, Loren D.
通讯作者:
Walensky, Loren D.
影响因子:
16
作者:
Gavathiotis E;Reyna DE;Davis ML;Bird GH;Walensky LD
通讯作者:
Walensky LD
影响因子:
7.4
作者:
Engen, John R.
通讯作者:
Engen, John R.