Ubiquitination of RIPK1 suppresses programmed cell death by regulating RIPK1 kinase activation during embryogenesis

RIPK1 integrates signals that drive both NF-κB activation and cell death pathways. Here Zhang et al. generate RIPK1 knock-in mice lacking a major ubiquitination site and demonstrate that this modification is important to suppress cell death during embryogenesis and inflammation postnatally.