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2016 ; 35
(17
): 1868-84
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SPATA2 links CYLD to the TNF-? receptor signaling complex and modulates the
receptor signaling outcomes
#MMPMID27307491
Wagner SA
; Satpathy S
; Beli P
; Choudhary C
EMBO J
2016[Sep]; 35
(17
): 1868-84
PMID27307491
show ga
TNF-? is a key regulator of innate immune and proinflammatory responses. However,
the composition of the TNF-? receptor-associated signaling complexes (TNF-RSC)
and the architecture of the downstream signaling networks are incompletely
understood. We employed quantitative mass spectrometry to demonstrate that TNF-?
stimulation induces widespread protein phosphorylation and that the scope of
phosphorylation expands in a temporal manner. TNF-? stimulation also induces
rapid ubiquitylation of components of the TNF-RSC Temporal analysis of the
TNF-RSC composition identified SPATA2 as a novel component of the TNF-RSC The
predicted PUB domain in the N-terminus of SPATA2 interacts with the USP domain of
CYLD, whereas the C-terminus of SPATA2 interacts with HOIP SPATA2 is required for
recruitment of CYLD to the TNF-RSC Downregulation of SPATA2 augments
transcriptional activation of NF-?B and inhibits TNF-?-induced necroptosis,
pointing to an important function of SPATA2 in modulating the outcomes of TNF-?
signaling. Taken together, our study draws a detailed map of TNF-? signaling,
identifies SPATA2 as a novel component of TNF-? signaling, and provides a rich
resource for further functional investigations.