Abstract：
:Programmed cell death (apoptosis) is used by multicellular organisms during development and to maintain homeostasis within mature tissues. One of the first genes shown to regulate apoptosis was bcl-2. Subsequently, a number of Bcl-2-related proteins have been identified. Despite overwhelming evidence that Bcl-2 proteins are evolutionarily conserved regulators of apoptosis, their precise biochemical function remains controversial. Three biochemical properties of Bcl-2 proteins have been identified: their ability to localize constitutively and/or inducibly to the outer mitochondrial, outer nuclear and endoplasmic reticular membranes, their ability to form heterodimers with proteins bearing an amphipathic helical BH3 domain, and their ability to form ion-conducting channels in synthetic membranes. The discovery that mitochondria can play a key part in the induction of apoptosis has focused attention on the role that Bcl-2 proteins may have in regulating either mitochondrial physiology or mitochondria-dependent caspase activation. Here we attempt to synthesize our current understanding of the part played by mitochondria in apoptosis with a consideration of how Bcl-2 proteins might control cell death through an ability to regulate mitochondrial physiology.
journal_name
Nat Cell Bioljournal_title
Nature cell biologyauthors
Vander Heiden MG,Thompson CBdoi
10.1038/70237keywords:
subject
Has Abstractpub_date
1999-12-01 00:00:00pages
E209-16issue
8eissn
1465-7392issn
1476-4679journal_volume
1pub_type
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