BAX activation is initiated at a novel interaction site.
BAX activation is initiated at a novel interaction site.
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DOI:
10.1038/nature07396
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发表时间:
2008-10-23
期刊:
影响因子:
64.8
通讯作者:
Walensky, Loren D.
中科院分区:
文献类型:
--
作者:
Gavathiotis, Evripidis;Suzuki, Motoshi;Davis, Marguerite L.;Pitter, Kenneth;Bird, Gregory H.;Katz, Samuel G.;Tu, Ho-Chou;Kim, Hyungjin;Cheng, Emily H. -Y.;Tjandra, Nico;Walensky, Loren D.
BAX is a pro-apoptotic protein of the BCL-2 family stationed in the cytosol until activated by a diversity of stress stimuli to induce cell death. Anti-apoptotic proteins such as BCL-2 counteract BAX-mediated cell death. Although an interaction site that confers survival functionality has been defined for anti-apoptotic proteins, an activation site has not been identified for BAX, rendering its explicit trigger mechanism unknown. We previously developed Stabilized Alpha-Helix of BCL-2 domains (SAHBs) that directly initiate BAX-mediated mitochondrial apoptosis. Here we demonstrate by NMR analysis that BIM SAHB binds BAX at an interaction site that is distinct from the canonical binding groove characterized for anti-apoptotic proteins. The specificity of the BIM SAHB-BAX interaction is highlighted by point mutagenesis that abrogates functional activity, confirming that BAX activation is initiated at this novel structural location. Thus, we have now defined a BAX interaction site for direct activation, establishing a new target for therapeutic modulation of apoptosis.
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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:
11.4
作者:
Dlugosz, Paulina J.;Billen, Lieven P.;Andrews, David W.
通讯作者:
Andrews, David W.
DOI:
10.1073/pnas.94.8.3668
发表时间:
1997-04-15
影响因子:
11.1
作者:
Hsu, YT;Wolter, KG;Youle, RJ
通讯作者:
Youle, RJ
影响因子:
50.3
作者:
Certo, Michael;Moore, Victoria Del Gaizo;Letai, Anthony
通讯作者:
Letai, Anthony
影响因子:
16
作者:
Cheng, EHYA;Wei, MC;Korsmeyer, SJ
通讯作者:
Korsmeyer, SJ