Block of voltage-gated calcium channels by peptide toxins.

Article Details

Citation

Bourinet E, Zamponi GW

Block of voltage-gated calcium channels by peptide toxins.

Neuropharmacology. 2017 Dec;127:109-115. doi: 10.1016/j.neuropharm.2016.10.016. Epub 2016 Oct 15.

PubMed ID
27756538 [ View in PubMed
]
Abstract

Venoms from various predatory species, such as fish hunting molluscs scorpions, snakes and arachnids contain a large spectrum of toxins that include blockers of voltage-gated calcium channels. These peptide blockers act by two principal manners - physical occlusion of the pore and prevention of activation gating. Many of the calcium channel-blocking peptides have evolved to tightly occupy their binding pocket on the principal pore forming subunit of the channel, often rendering block poorly reversible. Moreover, several of the best characterized blocking peptides have developed a high degree of channel subtype selectivity. Here we give an overview of different types of calcium channel-blocking toxins, their mechanism of action, channel subtype specificity, and potential use as therapeutic agents. This article is part of the Special Issue entitled 'Venom-derived Peptides as Pharmacological Tools.'

DrugBank Data that Cites this Article

Drugs
Drug Targets
DrugTargetKindOrganismPharmacological ActionActions
ZiconotideVoltage-dependent N-type calcium channel subunit alpha-1BProteinHumans
Yes
Inhibitor
Details