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Rabies virus P protein binds to TBK1 and interferes with the formation of innate immunity-related liquid condensates

ABSTRACT: Viruses must overcome the interferon-mediated antiviral response to replicate and propagate into their host. Rabies virus (RABV) phosphoprotein P is known to inhibit interferon induction. Here, using a global mass spectrometry approach, we show that RABV P binds to TBK1, a kinase located at the crossroads of many interferon induction pathways, resulting in innate immunity inhibition. Mutations of TBK1 phosphorylation sites abolish P binding. Importantly, we demonstrate that upon RABV infection or detection of dsRNA by innate immunity sensors, TBK1 and its adaptor proteins NAP1 and SINTBAD form dynamic cytoplasmic condensates that have liquid properties. These condensates can form larger aggregates having ring-like structures in which NAP1 and TBK1 exhibit locally restricted movement. P binding to TBK1 interferes with the formation of these structures. This work demonstrates that proteins of the signaling pathway leading to interferon induction transiently form liquid organelles that can be targeted by viruses.

INSTRUMENT(S):

ORGANISM(S): Homo Sapiens (human)

TISSUE(S): Kidney Cell

DISEASE(S): Rabies

SUBMITTER: Guillaume CHEVREUX

LAB HEAD: Cécile, LAGAUDRIERE-GESBERT

PROVIDER: PXD063965 | Pride | 2025-09-11

REPOSITORIES: Pride

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			Action	DRS
	1811006-F1.raw	Raw
	1811006-F1.raw.refined.mgf	Mgf
	1811006-F2.raw	Raw
	1811006-F2.raw.refined.mgf	Mgf
	1811006-F3.raw	Raw

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