Alpha-conotoxin PIVA

UniProtKB accession:  P55963

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UniProtKB description:  Alpha-conotoxins act on postsynaptic membranes, they bind to the nicotinic acetylcholine receptors (nAChR) and thus inhibit them. This toxin has higher affinity for the adult subtype (alpha-1-beta-1-gamma-delta (CHRNA1-CHRNB1-CHRNG-CHRND) subunits) (IC(50)=2.3 nM) of the receptor than for the fetal subtype (alpha-1-beta-1-epsilon-delta (CHRNA1-CHRNB1-CHRND-CHRNE) subunits) (IC(50)=22 nM).