Toxin GTx1-15

UniProtKB accession:  P0DL72

Grouped By:  Matching UniProtKB accession

UniProtKB description:  Potent voltage-gated sodium channel blocker (PubMed:25658507). Potently inhibits the voltage-gated sodium channels Nav1.7/SCN9A (IC(50)=0.58-10 nM) (PubMed:25658507, PubMed:26999206). Also shows a moderate activity on Nav1.1/SCN1A (IC(50)=6 nM), Nav1.2/SCN2A (IC(50)=5-128 nM), Nav1.3/SCN3A (IC(50)=20.3-170 nM), and Nav1.6/SCN8A (IC(50)=17-20.1 nM) (PubMed:25658507, PubMed:26999206). Shows an unclear inhibition of Nav1.4/SCN4A (IC(50)=200 nM to >10 uM), Nav1.5/SCN5A (IC(50)=140 nM to >10 uM) and Nav1.8/SCN10A (IC(50)=68-12200 nM) (PubMed:25658507, PubMed:26999206). Weakly blocks the low voltage-gated calcium channels Cav3.1/CACNA1G (30% inhibition of the peak current at 9.8 nM) (By similarity). shows moderate affinity for lipid bilayers (By similarity). In vivo, when tested on the OD1-induced mouse model of Nav1.7/SCN9A-mediated pain, the toxin is effective when co-administered with OD1, but lacks efficacy when delivered systemically (PubMed:26999206).