Phosphorylation of iRhom2 controls stimulated proteolytic shedding by the metalloprotease ADAM17/TACE

TACE (TNFa Converting Enzyme), is responsible for cleavage (‘shedding’) of membrane-tethered signaling molecules such as TNF of EGFR ligands. TACE interacts with iRhom2, which mediates the exit of TACE from the endoplasmic reticulum. In this study we analyze a new role for iRHOM2, where a fraction of the protein remains in the membrane and the phosphorylation of different residues in its cytoplasmatic tail is necessary for TACE shedding function.