Immunogen:
Fusion protein amino acids 269-386 (Repeat I external pore between S5 and S6) of rat Nav1.4 (also known as Voltage-gated sodium channel subunit alpha Nav1.4, Sodium channel protein skeletal muscle subunit alpha, Sodium channel protein type IV subunit alpha, Scn4a, SkM1 and Mu-1, accession number P15390)
Mouse: 96% identity (113/118 amino acids identical)
Human: 85% identity (106/124 amino acids identical)
<60% identity with Nav1.2, Nav1.3 and other Nav1 channels