NT1 -20 is a tatylated membrane penetrating peptide derived from the N-terminus of the acid sensing ion channel 1a (ASIC1a), which can block ASIC1a binding receptor interacting protein kinase 1 (RIPK1) to its C terminus. ASIC1a mediates necroptosis via recruiting RIPK1, independent of its ion-conducting function, and though this mechanism NT1-20 can protect neurons against acidosis induced necroptosis in vitro. NT1-20 can also reduce neuronal damage in mouse models of ischemic stroke.
