I2-superfamily conotoxins
Conotoxins (or conopeptides) are the peptidic components of the venoms of marine cone snails (genus Conus). They are classified in one of three ways: gene superfamily, cysteine framework or pharmacological family. Several distinct cysteine frameworks have been described in conotoxins. Members of this family display a XI cysteine pattern (C-C-CC-CC-C-C) and belong to the I2- superfamily conotoxins. Family members such as Kappa-conotoxin ViTx and Kappa-conotoxin SrXIA inhibit voltage gated potassium channels (Kv).
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