ReconstitutionReconstitute with 10 mM Tris, pH 7.5, containing 100 mM sodium chloride, 0.1% bovine serum albumin and 1 mM EDTA.
Potassium channel toxin alpha KTx 3.2
RelevanceAgitoxin is a toxin found in the venom of the scorpion Leiurus quinquestriatus herbraeus (yellow scorpion).
Agitoxin binds to the Shaker K+ channel in Drosophila as well as to its mammalian homologue. It blocks this channel by binding with high affinity (Kd < 1 nM) to its external vestibule.
Its structure consists of a triple-stranded antiparallel beta-sheet and a single helix covering one face of the beta-sheet. The cysteine side chains connect the beta-sheet and the helix form to the core of the molecule. The fold of agitoxin is homologous to the previously determined folds of scorpion venom toxins.
Three types of agitoxin can be distinguished; all 3 agitoxins have been identified as 38 amino acid toxins (cystine bonds not shown): Agitoxin-2 Gly-Val-Pro-Ile-Asn-Val-Ser-Cys-Thr-Gly-Ser-Pro-Gln-Cys-Ile-Lys-Pro-Cys-Lys-Asp-Ala-Gly-Met-Arg-Phe-Gly-Lys-Cys-Met-Asn-Arg-Lys-Cys-His-Cys-Thr-Pro-Lys Molecular Formula = 169H278N54O48S8
References for Recombinant Scorpion Agitoxin2 protein (ab57372)
has not yet been referenced specifically in any publications.
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