BAM7 is a selective activator of BAX, a proapoptotic member of the BCL-2 protein family. BAM7 binds directly to the BAX trigger site, a distinct BH3 binding site that regulates BAX activation, inducing BAX oligomerization, which enables the release of apoptogenic factors that result in cell death. BAM7 is selective for this previously unknown BH3-binding groove on the N-terminal face of BAX.
Mitochondrial outer membrane permeabilization (MOMP) is a core event in apoptosis signaling. However, the underlying mechanism of BAX and BAK pore formation remains incompletely understood. We demonstrate that mitochondria are globally and dynamically targeted by endolysosomes (ELs) during MOMP. In
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