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The TNFR2-TRAF signaling complex contains two novel proteins related to baculoviral inhibitor of apoptosis proteins

Identifieur interne : 004061 ( Main/Exploration ); précédent : 004060; suivant : 004062

The TNFR2-TRAF signaling complex contains two novel proteins related to baculoviral inhibitor of apoptosis proteins

Auteurs : Mike Rothe [États-Unis] ; Ming-Gui Pan [États-Unis] ; William J. Henzel [États-Unis] ; T. Merrill Ayres [États-Unis] ; David V. Goeddel [États-Unis]

Source :

RBID : ISTEX:EA5DDDFB1957ABF234D2BDA8D894BDDAEE97E52D

English descriptors

Abstract

Abstract: The 75 kDa tumor necrosis factor receptor (TNFR2) transduces extracellular signals via receptor-associated cytoplasmic proteins. Two of these signal transducers, TRAF1 and TRAF2, were isolated and characterized previously. We report here the biochemical purification and subsequent molecular cloning of two novel TNFR2-associated proteins, designated c-IAP1 and c-IAP2, that are closely related mammalian members of the inhibitor of apoptosis protein (IAP) family orginally identified in baculoviruses. The viral and cellular IAPs contain N-terminal baculovirus IAP repeat (BIR) motifs and a C-terminal RING finger. The c-IAPs do not directly contact TNFR2, but rather associate with TRAF1 and TRAF2 through their N-terminal BIR motif-comprising domain. The recruitment of c-IAP1 or c-IAP2 to the TNFR2 signaling complex requires a TRAF2-TRAF1 heterocomplex.

Url:
DOI: 10.1016/0092-8674(95)90149-3


Affiliations:


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<term>Amino acid sequencing</term>
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<term>Apoptosis protein</term>
<term>Autographa californica</term>
<term>Baculoviral inhibitor</term>
<term>Birnbaum</term>
<term>Cdna</term>
<term>Cdna clone</term>
<term>Cell death</term>
<term>Cell lysates</term>
<term>Cellular members</term>
<term>Cheng</term>
<term>Clem</term>
<term>Clone</term>
<term>Cold spring harbor laboratory press</term>
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<term>Coprecipitation experiments</term>
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<term>Cytoplasmic domain</term>
<term>Cytoplasmic domains</term>
<term>Cytoplasmic proteins</term>
<term>Death domarn</term>
<term>Degenerate oligonucleotides</term>
<term>Degradation product</term>
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<term>Experimental procedures</term>
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<term>Fusion protein affinity column</term>
<term>Fusion proteins</term>
<term>Gal4</term>
<term>Gal4 activation</term>
<term>Gal4 dnabinding domain</term>
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<term>Identical results</term>
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<term>Necrosis</term>
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<term>Protein bands</term>
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<term>Sequence motif</term>
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<term>Signal transduction</term>
<term>Silver staining</term>
<term>Tartaglia</term>
<term>Tnfr</term>
<term>Tnfr superfamily</term>
<term>Tnfr2</term>
<term>Tnfrbassociated protein</term>
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<term>Traf domain</term>
<term>Traf2</term>
<term>Traf3</term>
<term>Trafl</term>
<term>Trafp</term>
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<term>Transfected</term>
<term>Tumor necrosis factor</term>
<term>Tumor necrosis factor receptor</term>
<term>Unpublished data</term>
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<div type="abstract" xml:lang="en">Abstract: The 75 kDa tumor necrosis factor receptor (TNFR2) transduces extracellular signals via receptor-associated cytoplasmic proteins. Two of these signal transducers, TRAF1 and TRAF2, were isolated and characterized previously. We report here the biochemical purification and subsequent molecular cloning of two novel TNFR2-associated proteins, designated c-IAP1 and c-IAP2, that are closely related mammalian members of the inhibitor of apoptosis protein (IAP) family orginally identified in baculoviruses. The viral and cellular IAPs contain N-terminal baculovirus IAP repeat (BIR) motifs and a C-terminal RING finger. The c-IAPs do not directly contact TNFR2, but rather associate with TRAF1 and TRAF2 through their N-terminal BIR motif-comprising domain. The recruitment of c-IAP1 or c-IAP2 to the TNFR2 signaling complex requires a TRAF2-TRAF1 heterocomplex.</div>
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