omega-Atracotoxin

Available protein structures:
Pfam	structures / ECOD
PDB	RCSB PDB; PDBe; PDBj
PDBsum	structure summary
PDB	1hvwA:4-23 1axh :1-37

ω-Atracotoxin
ω-Atracotoxin
Identifiers
Symbol	Omega-toxin
Pfam	PF06357
InterPro	IPR009415
SCOP2	1hvw / SCOPe / SUPFAM
Pfam
Available protein structures:
Pfam	structures / ECOD
PDB	RCSB PDB; PDBe; PDBj
PDBsum	structure summary
PDB	1hvwA:4-23 1axh :1-37

omega-Atracotoxin (ω-atracotoxin) is an insect-specific neurotoxin produced by the Blue Mountains funnel-web spider. Its phylogenetic specificity derives from its ability to antagonise insect, but not vertebrate, voltage-gated calcium channels. Two spatially proximal amino acid residues, Asn(27) and Arg(35), form a contiguous molecular surface that is essential for toxin activity. It has been proposed that this surface of the beta-hairpin is a key site for interaction of the toxin with insect calcium channels.^[1]

References

^ King GF, Fletcher JI, Tedford HW (2001). "Functional significance of the beta hairpin in the insecticidal neurotoxin omega-atracotoxin-Hv1a". J. Biol. Chem. 276 (28): 26568–26576. doi:10.1074/jbc.M102199200. PMID 11313356.

This article incorporates text from the public domain Pfam and InterPro: IPR009415

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[PUB00012336-1] King GF, Fletcher JI, Tedford HW (2001). "Functional significance of the beta hairpin in the insecticidal neurotoxin omega-atracotoxin-Hv1a". J. Biol. Chem. 276 (28): 26568–26576. doi:10.1074/jbc.M102199200. PMID 11313356.

[1]

See also

References