Catalog No: OPCA02980
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Product Info
Predicted Species ReactivityMicrurus tener
Product FormatLiquid or Lyophilized powder
HostMicrurus tener tener
Reconstitution and Storage-20°C or -80°C
Formulation20 mM Tris-HCl based buffer, pH 8.0
PurityGreater than 90% as determined by SDS-PAGE.
Storage BufferIf the delivery form is liquid, the default storage buffer is Tris/PBS-based buffer, 5%-50% glycerol. If the delivery form is lyophilized powder, the buffer before lyophilization is Tris/PBS-based buffer, 6% Trehalose, pH 8.0.
Protein Range25-84 aa
TagN-terminal 6xHis-tagged
ReferenceA heteromeric Texas coral snake toxin targets acid-sensing ion channels to produce pain.Bohlen C.J., Chesler A.T., Sharif-Naeini R., Medzihradszky K.F., Zhou S., King D., Sanchez E.E., Burlingame A.L., Basbaum A.I., Julius D.Nature 479:410-414(2011)
Alias SymbolsKunitz-type neurotoxin MitTx-alpha
Protein NameKunitz-type neurotoxin MitTx-alpha
Description of TargetMitTx, a heteromeric complex between Kunitz- and phospholipase-A2-like proteins, potently, persistently and selectively activates rat and chicken acid-sensing ion channel ASIC1 (PubMed:22094702, PubMed:24507937). Both alternatively spliced rat isoforms ASIC1a and ASIC1b are activated, with a higher potency for ASIC1a (EC(50)=9.4 nM) vs ASIC1b (EC(50)=23 nM) (PubMed:22094702). The rat ASIC3 subtype is also sensitive to the heterodimer, but with a lower potency (EC(50)=830 nM) (PubMed:22094702). On rat ASIC2a, the toxin shows a very weak activation, but produces a remarkable potentiation (>100-fold) of protons when the extracellular pH drops below neutrality (PubMed:22094702). Moderate and weak activations are also observed on the heterotrimers Asic1a-Asic2a and Asic1a-Asic3 (expressed in CHO cells), respectively (PubMed:22094702). The binding sites of the beta subunit of MitTx and the spider psalmotoxin-1 overlap, explaining why these toxins are mutually exclusive (PubMed:22094702. PubMed:24507937). In vivo, the heterodimer elicits robust pain-related behavior in mice by activation of ASIC1 channels on capsaicin-sensitive nerve fibers (PubMed:22094702).
Uniprot IDG9I929
Protein Size (# AA)Recombinant
Molecular Weight9.1 kDa
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