The Structure of FADD and Its Mode of Interaction with Procaspase-8

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The structure of FADD has been solved in solution, revealing that the death effector domain (DED) and death domain (DD) are aligned with one another in an orthogonal, tail-to-tail fashion. Mutagenesis of FADD and functional reconstitution with its binding partners define the interaction with the intracellular domain of CD95 and the prodomain of procaspase-8 and reveal a self-association surface necessary to form a productive complex with an activated "death receptor." The identification of a procaspase-specific binding surface on the FADD DED suggests a preferential interaction with one, but not both, of the DEDs of procaspase-8 in a perpendicular arrangement. FADD self-association is mediated by a "hydrophobic patch" in the vicinity of F25 in the DED. The structure of FADD and its functional characterization, therefore, illustrate the architecture of key components in the death-inducing signaling complex. © 2006 Elsevier Inc. All rights reserved.

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Carrington, P. E., Sandu, C., Wei, Y., Hill, J. M., Morisawa, G., Huang, T., … Werner, M. H. (2006). The Structure of FADD and Its Mode of Interaction with Procaspase-8. Molecular Cell, 22(5), 599–610.

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