Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

ChainsDomain InfoClassFoldSuperfamilyFamilyDomainSpeciesProvenance Source (Version)
Ad2jtba_ Small proteins Knottins (small inhibitors, toxins, lectins) omega toxin-like Spider toxins automated matches (Haplopelma hainanum ) [TaxId: 209901 ], SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
ASCOP2 FamilySpider toxins 8061080 4003112 SCOP2 (2022-06-29)
ASCOP2 Superfamilyomega toxin-like 8061081 3000255 SCOP2 (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
AToxin_12e2jtbA1 A: few secondary structure elementsX: omega toxin-likeH: omega toxin-relatedT: omega toxin-relatedF: Toxin_12ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
PF07740Ion channel inhibitory toxin (Toxin_12)Ion channel inhibitory toxinThis 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

InterPro: Protein Family Classification InterPro Database Homepage

ChainsAccessionNameType
IPR013140Huwentoxin, conserved site-1Conserved Site
IPR011696Huwentoxin-1 familyFamily