rdf:type |
|
lifeskim:mentions |
|
pubmed:issue |
15
|
pubmed:dateCreated |
1996-6-20
|
pubmed:abstractText |
Bcl-2 and Bax are members of a family of cytoplasmic proteins that regulate apoptosis. The two proteins have highly similar amino acid sequences but are functionally opposed: Bcl-2 acts to inhibit apoptosis, whereas Bax counteracts this effect. The antagonism appears to depend upon dimerization between Bcl-2 and Bax, but its mechanism is otherwise unknown. Here we report that overexpressing Bax induces apoptosis in a mammalian fibroblast cell line, and we identify a novel, short "suicide domain" in Bax that is required for this effect. Inserting this domain in place of the corresponding, divergent sequence in Bcl-2 converts Bcl-2 from an inhibitor into an activator of cell death. These findings imply that a specific region in Bax confers an active propensity for apoptosis in mammalian cells and support the view that Bcl-2 may block death primarily by suppressing Bax activity.
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pubmed:grant |
|
pubmed:language |
eng
|
pubmed:journal |
|
pubmed:citationSubset |
IM
|
pubmed:chemical |
|
pubmed:status |
MEDLINE
|
pubmed:month |
Apr
|
pubmed:issn |
0021-9258
|
pubmed:author |
|
pubmed:issnType |
Print
|
pubmed:day |
12
|
pubmed:volume |
271
|
pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
|
pubmed:pagination |
8521-4
|
pubmed:dateRevised |
2007-11-14
|
pubmed:meshHeading |
pubmed-meshheading:8621473-Amino Acid Sequence,
pubmed-meshheading:8621473-Animals,
pubmed-meshheading:8621473-Apoptosis,
pubmed-meshheading:8621473-Cell Line,
pubmed-meshheading:8621473-Humans,
pubmed-meshheading:8621473-Mice,
pubmed-meshheading:8621473-Molecular Sequence Data,
pubmed-meshheading:8621473-Proto-Oncogene Proteins,
pubmed-meshheading:8621473-Proto-Oncogene Proteins c-bcl-2,
pubmed-meshheading:8621473-Recombinant Fusion Proteins,
pubmed-meshheading:8621473-Sequence Alignment,
pubmed-meshheading:8621473-Sequence Homology, Amino Acid,
pubmed-meshheading:8621473-Structure-Activity Relationship,
pubmed-meshheading:8621473-bcl-2-Associated X Protein
|
pubmed:year |
1996
|
pubmed:articleTitle |
A peptide sequence from Bax that converts Bcl-2 into an activator of apoptosis.
|
pubmed:affiliation |
Department of Pathology, University of California, San Francisco, 94143-0506, USA.
|
pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, P.H.S.
|