Regulation of the Apaf-1–caspase-9 apoptosome
نویسندگان
چکیده
منابع مشابه
Regulation of the Apaf-1-caspase-9 apoptosome.
caspase-9 apoptosome Shawn B. Bratton1 and Guy S. Salvesen2 1Division of Pharmacology and Toxicology, College of Pharmacy, and Center for Molecular and Cellular Toxicology, and Institute for Cellular and Molecular Biology, The University of Texas at Austin, Austin, TX 78712-0125, USA 2Program in Apoptosis and Cell Death Research, Sanford-Burnham Medical Research Institute, 10901 North Torrey Pi...
متن کاملThe Apaf-1 apoptosome induces formation of caspase-9 homo- and heterodimers with distinct activities
According to dogma, initiator caspases are activated through proximity-induced homodimerization, but some studies infer that during apoptosis caspase-9 may instead form a holoenzyme with the Apaf-1 apoptosome. Using several biochemical approaches, including a novel site-specific crosslinking technique, we provide the first direct evidence that procaspase-9 homodimerizes within the apoptosome, m...
متن کاملTaurine inhibits apoptosis by preventing formation of the Apaf-1/caspase-9 apoptosome.
Cardiomyocyte apoptosis contributes to cell death during myocardial infarction. One of the factors that regulate the degree of apoptosis during ischemia is the amino acid taurine. To study the mechanism underlying the beneficial effect of taurine, we examined the interaction between taurine and mitochondria-mediated apoptosis using a simulated ischemia model with cultured rat neonatal cardiomyo...
متن کاملMolecular determinants of caspase-9 activation by the Apaf-1 apoptosome.
Autocatalytic activation of an initiator caspase triggers the onset of apoptosis. In dying cells, caspase-9 activation is mediated by a multimeric adaptor complex known as the Apaf-1 apoptosome. The molecular mechanism by which caspase-9 is activated by the Apaf-1 apoptosome remains largely unknown. Here we demonstrate that the previously reported 1:1 interaction between Apaf-1 caspase recruitm...
متن کاملThe Apaf-1*procaspase-9 apoptosome complex functions as a proteolytic-based molecular timer.
During stress-induced apoptosis, the initiator caspase-9 is activated by the Apaf-1 apoptosome and must remain bound to retain significant catalytic activity. Nevertheless, in apoptotic cells the vast majority of processed caspase-9 is paradoxically observed outside the complex. We show herein that apoptosome-mediated cleavage of procaspase-9 occurs exclusively through a CARD-displacement mecha...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Cell Science
سال: 2010
ISSN: 1477-9137,0021-9533
DOI: 10.1242/jcs.073643