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Using fluorescent variants of Fas and FasL, we show that membrane FasL and Fas form supramolecular clusters that are of flexible shape, but nevertheless stable and persistent. Membrane FasL-induced Fas clusters were formed in caspase-8- or FADD-deficient cells or when a cytoplasmic deletion mutant of Fas was used suggesting that cluster formation is(More)
TNF-receptor associated factors (TRAFs) comprise a family of adaptor proteins that act as downstream signal transducers of the TNF receptor superfamily and the Toll/interleukin-1 receptor family. The mammalian TRAFs 2, 5 and 6 are known to activate JNK- and NF-kappaB signaling pathways, whereas the function of the other three mammalian family members, TRAF(More)
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