OSK-1

OSK-1 is a potent Kv channel blocker with IC50s of of 0.6 nM, 5.4 nM, 0.014 nM for Kv1.1, Kv1.2 and Kv1.3, respectively. OSK1 is a moderate blocker of Ca2+-activated KCa3.1 channel with an IC50 of 225 nM. OSK-1 belongs to α-KTx3 toxins and is used as a immunosuppressive agent.

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