Mechanisms of membrane permeabilization by picornavirus 2B viroporin
نویسندگان
چکیده
منابع مشابه
Viroporin-mediated Membrane Permeabilization
Enterovirus nonstructural 2B protein is involved in cell membrane permeabilization during late viral infection. Here we analyze the pore forming activity of poliovirus 2B and several of its variants. Solubilization of 2B protein was achieved by generating a fusion protein comprised of poliovirus 2B attached to a maltose-binding protein (MBP) as an N-terminal solubilization partner. MBP-2B was a...
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Virus infections can result in a variety of cellular injuries, and these often involve the permeabilization of host membranes by viral proteins of the viroporin family. Prototypical viroporin 2B is responsible for the alterations in host cell membrane permeability that take place in enterovirus-infected cells. 2B protein can be localized at the endoplasmic reticulum (ER) and the Golgi complex, ...
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Nod-like receptors (NLRs) comprise a large family of intracellular pattern- recognition receptors. Members of the NLR family assemble into large multiprotein complexes, termed the inflammasomes. The NLR family, pyrin domain-containing 3 (NLRP3) is triggered by a diverse set of molecules and signals, and forms the NLRP3 inflammasome. Recent studies have indicated that both DNA and RNA viruses st...
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During apoptosis, the process of mitochondrial outer membrane permeabilization (MOMP) represents a point-of-no-return as it commits the cell to death. Here we have assessed the role of caspases, Bcl-2 family members and the mitochondrial permeability transition pore on ER stress-induced MOMP and subsequent cell death. Induction of ER stress leads to upregulation of several genes such as Grp78, ...
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Intracellular killing of Streptococcus pneumoniae is complemented by induction of macrophage apoptosis. Here, we show that the toxin pneumolysin (PLY) contributes both to lysosomal/phagolysosomal membrane permeabilization (LMP), an upstream event programing susceptibility to apoptosis, and to apoptosis execution via a mitochondrial pathway, through distinct mechanisms. PLY is necessary but not ...
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ژورنال
عنوان ژورنال: FEBS Letters
سال: 2003
ISSN: 0014-5793
DOI: 10.1016/s0014-5793(03)00852-4