Journal
TRENDS IN BIOCHEMICAL SCIENCES
Volume 36, Issue 12, Pages 642-652Publisher
ELSEVIER SCIENCE LONDON
DOI: 10.1016/j.tibs.2011.08.009
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Funding
- NIH [5R01CA50239, 1K99HL095929]
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BAX, the BCL-2-associated X protein, is a cardinal proapoptotic member of the BCL-2 family, which regulates the critical balance between cellular life and death. Because so many medical conditions can be categorized as diseases of either too many or too few cells, dissecting the biochemistry of BCL-2 family proteins and developing pharmacological strategies to target them have become high priority scientific objectives. Here, we focus on BAX, a latent, cytosolic and monomeric protein that transforms into a lethal mitochondrial oligomer in response to cellular stress. New insights into the structural location of BAX's 'on switch', and the multi-step conformational changes that ensue upon BAX activation, are providing fresh opportunities to modulate BAX for potential benefit in human diseases characterized by pathologic cell survival or unwanted cellular demise.
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