Caspase‐2 is resistant to inhibition by inhibitor of apoptosis proteins (IAPs) and can activate caspase‐7

Caspases are a family of cysteine proteases with roles in cytokine maturation or apoptosis. Caspase‐2 was the first pro‐apoptotic caspase identified, but its functions in apoptotic signal transduction are still being elucidated. This study examined the regulation of the activity of caspase‐2 using r...

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Published inThe FEBS journal Vol. 272; no. 6; pp. 1401 - 1414
Main Authors Ho, Po‐ki, Jabbour, Anissa M., Ekert, Paul G., Hawkins, Christine J.
Format Journal Article
LanguageEnglish
Published Oxford, UK Blackwell Science Ltd 01.03.2005
Blackwell Publishing Ltd
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ISSN1742-464X
1742-4658
DOI10.1111/j.1742-4658.2005.04573.x

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Abstract Caspases are a family of cysteine proteases with roles in cytokine maturation or apoptosis. Caspase‐2 was the first pro‐apoptotic caspase identified, but its functions in apoptotic signal transduction are still being elucidated. This study examined the regulation of the activity of caspase‐2 using recombinant proteins and a yeast‐based system. Our data suggest that for human caspase‐2 to be active its large and small subunits must be separated. For maximal activity its prodomain must also be removed. Consistent with its proposed identity as an upstream caspase, caspase‐2 could provoke the activation of caspase‐7. Caspase‐2 was not subject to inhibition by members of the IAP family of apoptosis inhibitors.
AbstractList Caspases are a family of cysteine proteases with roles in cytokine maturation or apoptosis. Caspase-2 was the first pro-apoptotic caspase identified, but its functions in apoptotic signal transduction are still being elucidated. This study examined the regulation of the activity of caspase-2 using recombinant proteins and a yeast-based system. Our data suggest that for human caspase-2 to be active its large and small subunits must be separated. For maximal activity its prodomain must also be removed. Consistent with its proposed identity as an upstream caspase, caspase-2 could provoke the activation of caspase-7. Caspase-2 was not subject to inhibition by members of the IAP family of apoptosis inhibitors. [PUBLICATION ABSTRACT]
Caspases are a family of cysteine proteases with roles in cytokine maturation or apoptosis. Caspase‐2 was the first pro‐apoptotic caspase identified, but its functions in apoptotic signal transduction are still being elucidated. This study examined the regulation of the activity of caspase‐2 using recombinant proteins and a yeast‐based system. Our data suggest that for human caspase‐2 to be active its large and small subunits must be separated. For maximal activity its prodomain must also be removed. Consistent with its proposed identity as an upstream caspase, caspase‐2 could provoke the activation of caspase‐7. Caspase‐2 was not subject to inhibition by members of the IAP family of apoptosis inhibitors.
Caspases are a family of cysteine proteases with roles in cytokine maturation or apoptosis. Caspase-2 was the first pro-apoptotic caspase identified, but its functions in apoptotic signal transduction are still being elucidated. This study examined the regulation of the activity of caspase-2 using recombinant proteins and a yeast-based system. Our data suggest that for human caspase-2 to be active its large and small subunits must be separated. For maximal activity its prodomain must also be removed. Consistent with its proposed identity as an upstream caspase, caspase-2 could provoke the activation of caspase-7. Caspase-2 was not subject to inhibition by members of the IAP family of apoptosis inhibitors.Caspases are a family of cysteine proteases with roles in cytokine maturation or apoptosis. Caspase-2 was the first pro-apoptotic caspase identified, but its functions in apoptotic signal transduction are still being elucidated. This study examined the regulation of the activity of caspase-2 using recombinant proteins and a yeast-based system. Our data suggest that for human caspase-2 to be active its large and small subunits must be separated. For maximal activity its prodomain must also be removed. Consistent with its proposed identity as an upstream caspase, caspase-2 could provoke the activation of caspase-7. Caspase-2 was not subject to inhibition by members of the IAP family of apoptosis inhibitors.
Author Ekert, Paul G.
Jabbour, Anissa M.
Hawkins, Christine J.
Ho, Po‐ki
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Snippet Caspases are a family of cysteine proteases with roles in cytokine maturation or apoptosis. Caspase‐2 was the first pro‐apoptotic caspase identified, but its...
Caspases are a family of cysteine proteases with roles in cytokine maturation or apoptosis. Caspase-2 was the first pro-apoptotic caspase identified, but its...
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wiley
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SubjectTerms Animals
Apoptosis - physiology
Caspase 2
Caspase 7
Caspase Inhibitors
Caspases - metabolism
Cytokines
Enzyme Activation
enzyme activity
Inhibitor of Apoptosis Proteins
Mammals
protease
Proteins
Proteins - metabolism
Recombinant Proteins - metabolism
S. cerevisiae
Saccharomyces cerevisiae - genetics
Saccharomyces cerevisiae - metabolism
Signal Transduction
Yeast
Title Caspase‐2 is resistant to inhibition by inhibitor of apoptosis proteins (IAPs) and can activate caspase‐7
URI https://onlinelibrary.wiley.com/doi/abs/10.1111%2Fj.1742-4658.2005.04573.x
https://www.ncbi.nlm.nih.gov/pubmed/15752357
https://www.proquest.com/docview/204117228
https://www.proquest.com/docview/67494382
Volume 272
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