Abstract
The serine/threonine kinase RIPK1 has emerged as a crucial component of the inflammatory response activated downstream of several immune receptors, where it paradoxically functions as a scaffold to protect the cell from death or instead as an active kinase to promote the killing of the cell. While RIPK1 kinase-dependent cell death has revealed its physiological importance in the context of microbial infection, aberrant activation of RIPK1 is also demonstrated to promote cell death-driven inflammatory pathologies, highlighting the importance of fundamentally understanding proper RIPK1 regulation. Recent advances in the field demonstrated the crucial role of phosphorylation in the fine-tuning of RIPK1 activation and, additionally, question the exact mechanism by which RIPK1 enzymatic activity transmits the death signal.
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