Mammalian mitochondrial endonuclease G
نویسندگان
چکیده
منابع مشابه
Mammalian mitochondrial endonuclease activities specific for ultraviolet-irradiated DNA.
Mitochondrial forms of uracil DNA glycosylase and UV endonuclease have been purified and characterized from the mouse plasmacytoma cell line, MPC-11. As in other cell types, the mitochondrial uracil DNA glycosylase has properties very similar to those of the nuclear enzyme, although in this case the mitochondrial activity was also distinguishable by extreme sensitivity to dilution. Three mitoch...
متن کاملDifferential efflux of mitochondrial endonuclease G by hNoxa and tBid.
The Bcl-2 family of proteins regulates mitochondrial functions during cell death by modulating the efflux of death-promoting proteins such as cytochrome c and endonuclease G. Upon the binding of death ligands to their receptors, caspase-8 cleaves Bid, a BH3-only protein, into tBid that causes the mitochondrial damages resulting in the release of cytochrome c and endonuclease G. Also, another BH...
متن کاملMitochondrial endonuclease G mediates breakdown of paternal mitochondria upon fertilization.
Mitochondria are inherited maternally in most animals, but the mechanisms of selective paternal mitochondrial elimination (PME) are unknown. While examining fertilization in Caenorhabditis elegans, we observed that paternal mitochondria rapidly lose their inner membrane integrity. CPS-6, a mitochondrial endonuclease G, serves as a paternal mitochondrial factor that is critical for PME. We found...
متن کاملEndonuclease G from mammalian nuclei is identical to the major endonuclease of mitochondria
Two Mg(2+)-dependent DNA endonucleases have been isolated from mammalian cells which have a strong preference to nick within long tracts of guanine residues in vitro. One endonuclease activity is mitochondrial (mt). The other endonuclease, called Endonuclease G, is associated with isolated nuclei, and is released when the nuclear chromatin is exposed to moderate ionic strength. Our laboratory h...
متن کاملA 55-kDa endonuclease of mammalian mitochondria: comparison of its subcellular localization and endonucleolytic properties with those of endonuclease G.
A novel endonuclease of 55-kDa was found in rat liver mitochondria by a zymographic assay, in addition to the 29 kDa enzyme that is well-known as endonuclease G (Endo G). Subcellular localization of these enzymes in rat liver cells was examined by biochemical fractionation. Endo G was located in both nuclei and mitochondria as has been previously reported, while the 55-kDa enzyme was only detec...
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ژورنال
عنوان ژورنال: European Journal of Biochemistry
سال: 2002
ISSN: 0014-2956
DOI: 10.1046/j.1432-1033.2002.03238.x