Fig. 6. Nuclear RIPK3 and MLKL contribute to cytosolic RIPK3:MLKL oligomerization during necroptosis.
Hypothetical model of the nuclear events following necroptosis induction. Nuclear RIPK1 is ubiquitinated to provide a scaffold for nuclear RIPK3 kinase activation. After its phosphorylation, RIPK3 associates with MLKL, leading to phosphorylation of MLKL. p-RIPK3 and p-MLKL are then cooperatively exported from the nucleus to contribute to cytosolic necrosome formation and consequently to cell death