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  • Title: Bcl-2 on the endoplasmic reticulum: protecting the mitochondria from a distance.
    Author: Thomenius MJ, Distelhorst CW.
    Journal: J Cell Sci; 2003 Nov 15; 116(Pt 22):4493-9. PubMed ID: 14576343.
    Abstract:
    Bcl-2 has been described both as an inhibitor of programmed cell death and as an inhibitor of mitochondrial dysfunction during apoptosis. It is still not clear what biochemical activity of Bcl-2 is responsible for its function, but increasing evidence indicates that a functional activity of Bcl-2 on the endoplasmic reticulum (ER) protects mitochondria under diverse circumstances. Indeed, an emerging hypothesis is that, during apoptosis, the Bcl-2 family regulates ER-to-mitochondrion communication by BH3-only proteins and calcium ions and thereby triggers mitochondrial dysfunction and cell death.
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