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- Rosso, J.P. et al. (2015) Proc. Natl. Acad. Sci. U.S.A. 112, E891.
- Alomone Labs MmTx2 Toxin modulates GABA(A) receptors expressed in Xenopus oocytes.A. Representative time course of GABA(A) α1/β2 currents activated at a holding potential of -80 mV with 50 nM Muscimol hydrobromide (#M-240) application (black bars), and modulated by co-application of 200 nM MmTx2 Toxin (#STM-600), as indicated (green bar). A significant modulation of receptor desensitization rate is observed. B. Superimposed traces of GABA(A) currents upon application of 50 nM Muscimol hydrobromide (black) or co-application of 50 nM Muscimol hydrobromide and 200 nM MmTx2 Toxin (green). Taken from the recording in A.
- Rosso, J.P. et al. (2015) Proc. Natl. Acad. Sci. U.S.A. 112, E891.
- Middendorp, S.J. et al. (2015) Neuropharmacology 95, 459.
MmTx2 (Micrurotoxin 2) is a peptide toxin originally isolated from Micrurus mipartitus (Red-tailed coral snake) venom. The toxin is an allosteric modulator of γ-aminobutyric acid type A receptors and tightly binds to these receptors at subnanomolar concentrations. MmTx2 allosterically increases GABA(A) receptor susceptibility to agonistic actions1. Like MmTx1 (#STM-550), MmTx2 may be a priceless tool in evoking seizures for testing novel antiepileptic drugs or as lead molecules for designing therapeutics that modulate GABA(A) receptor activity1.
GABA(A) receptors belong to the cys-loop pentameric ligand-gated ion channel family. These receptors are major inhibitory neurotransmitter receptors in the brain and in the mammalian central nervous system and are responsible for the mediation of GABA action, a major inhibitory neurotransmitter, through the central nervous system2.
MmTx2 Toxin (#STM-600) is a highly pure, synthetic, and biologically active peptide toxin.
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