Journal
BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES
Volume 1665, Issue 1-2, Pages 1-5Publisher
ELSEVIER
DOI: 10.1016/j.bbamem.2004.07.006
Keywords
Ca2+ -activated K+ channel; hIK; hSK; 1-EbIO; DC-EBIO; apamin; clotrimazole; whole-cell; HEK293
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We have identified and characterized the compound NS309 (6,7-dichloro-1H-indole-2,3-dione 3-oxime) as a potent activator of human Ca2+-activated K+ channels of SK and IK types, whereas it is devoid of effect on BK type channels. IK- and SK-channels have previously been reported to be activated by the benzimidazolinone, 1-EBIO and more potently by its dichloronated-analogue, DC-EBIO. NS309 is at least 1000 times more potent than 1-EBIO and at least 30 times more potent than DC-EBIO when the compounds are compared on the same cell. (C) 2004 Elsevier B.V. All rights reserved.
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