voltage-gated sodium channel subunit alpha sodium channel protein type 1 subunit alpha sodium channe type 1 subunit alpha sodium channel protein brain I subunit alpha Category=gene. sodium channel protein type I subunit alpha SCN1A A voltage-gated sodium channel subunit alpha that is a translation product of the human SCN1A gene or a 1:1 ortholog thereof. PR:000002095 NAC1 IUPHARobj:578 sodium channel type 1 subunit alpha protein PANTHER:PTHR10037:SF29 SCN1 voltage-gated sodium channel subunit alpha Nav1.1