Structural highlights
Function
CA18_CONBE Alpha-conotoxins bind to the nicotinic acetylcholine receptors (nAChR) and inhibit them. This toxin inhibits mammalian alpha-3-beta-2/CHRNA3-CHRNB2 nAChR (IC(50)=9.4 nM (rat), IC(50)=8.8 nM (human)), as well as the subunit chimera alpha-6/alpha-3-beta-2-beta-3 nAChR (CHRNA6/CHRNA3-CHRNB2-CHRNB3)(IC(50)=2.1 nM (rat), IC(50)=1.7 nM (human)). Binds to rat alpha-6/alpha-3-beta-2-beta-3 more rapidly than to alpha-3-beta-2, and dissociates more rapidly from alpha-3-beta-2 than from alpha-6/alpha-3-beta-2-beta-3.[1]
References
- ↑ Ning H, Huang B, Tae HS, Liu Z, Yu S, Li L, Zhang L, Adams DJ, Guo C, Dai Q. α-Conotoxin Bt1.8 from Conus betulinus selectively inhibits α6/α3β2β3 and α3β2 nicotinic acetylcholine receptor subtypes. J Neurochem. 2021 Oct;159(1):90-100. PMID:34008858 doi:10.1111/jnc.15434
