2I1T

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	Toxin_12	e2i1tA1	A: few secondary structure elements	X: omega toxin-like	H: omega toxin-related	T: omega toxin-related	F: Toxin_12	ECOD (1.6)

Chains	Accession	Name	Description	Comments	Source
A	PF07740	Ion channel inhibitory toxin (Toxin_12)	Ion channel inhibitory toxin	This is a family of potent toxins that function as ion-channel inhibitors for several different ions. Omega-Grammotoxin SIA is a VSCC antagonist that inhibits neuronal N- and P-type VSCC responses [1]. Huwentoxin-IV, from the Chinese bird spider, is ...	This is a family of potent toxins that function as ion-channel inhibitors for several different ions. Omega-Grammotoxin SIA is a VSCC antagonist that inhibits neuronal N- and P-type VSCC responses [1]. Huwentoxin-IV, from the Chinese bird spider, is a highly potent neurotoxin that specifically inhibits the neuronal tetrodotoxin-sensitive voltage-gated sodium channel in rat dorsal root ganglion neurons [2]. Hainantoxin-4, from the venom of spider Selenocosmia hainana, adopts an inhibitor cystine knot structural motif like huwentoin-IV, and is a potent antagonist that acts at site 1 on tetrodotoxin-sensitive (TTX-S) sodium channels [3]. Study of the molecular nature of toxin-receptor interactions has helped elucidate the functioning of many ion-channels [4].	Domain

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Jingzhaotoxin-3	molecular function inhibitor activity channel regulator activity transporter inhibitor activity ion channel inhibitor activity ion channel regulator activity molecular function regulator activity transporter regulator activity channel inhibitor activity potassium channel regulator activity sodium channel regulator activity toxin activity	-	cellular anatomical structure extracellular region