Cat. No. 1340
Biological ActivityHighly potent and selective competitive antagonist for α3β2 subunit-containing nicotinic receptors (IC50 = 0.5 - 3.5 nM at α3β2 expressed in Xenopus oocytes). Also potently blocks β3-containing neuronal nicotinic receptors. Displays > 200-fold selectivity for α3β2 over α2β2, α4β2 and α3β4.
Licensing InformationSold under license from the University of Utah.
(Modifications: Disulfide bridge between 2 - 8, 3 - 16, Cys-16 = C-terminal amide)
The technical data provided above is for guidance only. For batch specific data refer to the Certificate of Analysis.
All Tocris products are intended for laboratory research use only.
Certificate of Analysis / Product Datasheet / Safety Data Sheet
David et al (2010) Biochemical and functional properties of distinct nicotinic acetylcholine receptors in the superior cervical ganglion of mice with targeted deletions of nAChR subunit genes. Eur.J.Neurosci. 31 978. PMID: 20377613.
McIntosh et al (2000) Conus peptides: novel probes for nicotinic acetylcholine receptor structure and function. Eur.J.Pharmacol. 393 205. PMID: 10771014.
Harvey et al (1997) Determinants of specificity for α-conotoxin MII on α3β2 neuronal nicotinic receptors. Mol.Pharmacol. 51 336. PMID: 9203640.
Cartier et al (1996) A new α-conotoxin which targets α3β2 nicotinic acetylcholine receptors. J.Biol.Chem. 271 7522. PMID: 8631783.
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Citations are publications that use Tocris products. Selected citations for α-Conotoxin MII include:
Krais et al (2011) CHRNA5 as negative regulator of nicotine signaling in normal and cancer bronchial cells: effects on motility, migration and p63 expression. Carcinogenesis 32 1388. PMID: 21586512.
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