ARK, the Apaf-1 related killer in Drosophila, requires diverse domains for its apoptotic activity
نویسندگان
چکیده
منابع مشابه
Cell death: Drosophila Apaf-1 — no longer in the (d)Ark
The recent discovery and characterization of Ark, the Drosophila homolog of the mammalian cell-death adaptor protein Apaf-1, have revealed that, like Apaf-1, this protein is important in multiple apoptosis pathways. The new findings also suggest that cell death in flies is very similar to that in mammals after all.
متن کاملInactivation of Drosophila Apaf-1 related killer suppresses formation of polyglutamine aggregates and blocks polyglutamine pathogenesis.
Huntington's disease (HD) is caused by expansion of a polyglutamine tract near the N-terminal of huntingtin. Mutant huntingtin forms aggregates in striatum and cortex, where extensive cell death occurs. We used a Drosophila polyglutamine peptide model to assess the role of specific cell death regulators in polyglutamine-induced cell death. Here, we report that polyglutamine-induced cell death w...
متن کاملApoptotic protease-activating factor 1 (Apaf-1) as a liable gene for spontaneous mutations in vitro
The apoptotic protease-activating factor 1 (Apaf-1) receives the death signal in the intrinsic ormitochondrial pathway of apoptosis. Upon the releasing of cytochrome c from theintermembrane space of mitochondria and binding to Apaf-1 molecules, a heptamericapoptosome complex is formed and triggers the downstream cascade of caspases. Here, for thefirst time we present spontaneous mutations and r...
متن کاملAPAF 1 ( Apoptotic protease activating factor 1 )
Five isoforms of APAF1 cDNA have been identified in Homo sapiens: The original APAF1 (also called Apaf-1S) is 3585 bp long (it contains 12 WD40 repeats); The APAF1-1M isoform (3618 bp) contains an insertion of 33 nt after position 295 of the first published sequence (11 aa insertion GKDSVSGITSY between aa 98 and 99; it also contains 12 WD40 repeats); The APAF1XS isoform (3516 bp) contains the s...
متن کاملThe Drosophila melanogaster Apaf-1 homologue ARK is required for most, but not all, programmed cell death
The Apaf-1 protein is essential for cytochrome c-mediated caspase-9 activation in the intrinsic mammalian pathway of apoptosis. Although Apaf-1 is the only known mammalian homologue of the Caenorhabditis elegans CED-4 protein, the deficiency of apaf-1 in cells or in mice results in a limited cell survival phenotype, suggesting that alternative mechanisms of caspase activation and apoptosis exis...
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ژورنال
عنوان ژورنال: Cell Death & Differentiation
سال: 2006
ISSN: 1350-9047,1476-5403
DOI: 10.1038/sj.cdd.4401931