Paxilline is an indole alkaloid mycotoxin from Penicillium paxilli, acts as a potent BK channels inhibitor by an almost exclusively closed-channel block mechanism. Paxilline also inhibits the sarco/endoplasmic reticulum Ca2+ ATPase (SERCA) with IC50s between 5μM and 50μM for differing isoforms. Paxilline possesses significant anticonvulsant activity. References: Zhou Y, et al. Paxilline inhibits BK channels by an almost exclusively closed-channel block mechanism. J Gen Physiol. 2014 Nov;144(5):415-40. [2]. Bilmen JG, et al. The mechanism of inhibition of the sarco/endoplasmic reticulum Ca2+ ATPase by paxilline. Arch Biochem Biophys. 2002 Oct 1;406(1):55-64. [3]. Sheehan JJ, et al. Anticonvulsant effects of the BK-channel antagonist paxilline. Epilepsia. 2009 Apr;50(4):711-20.

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CAS：57186-25-1