Glisoxepide is a sulphonamide derivative and is an orally available nonselective K(ATP) channel blocker. It has antihyperglycemic activity and cardiovascular regulation effect.
KRN 4884 is an opener of the K+ channel. KRN 4884 (0.1-3 μM) activates KATPchannels in a concentration-dependent manner (EC50=0.55 μM), in the presence of intracellular ATP (1 mM).
Tilisolol is a nonselective blocker of beta-adrenergic. Tilisolol hydrochloride dilates coronary arteries through an ATP-sensitive K(+)-channel opening mechanism in dogs.
Guanosine 5’-diphosphate (GDP) is a purine nucleotide and biosynthetic precursor of guanosine 5’-triphosphate .1It has been used to study the conformations of GTPases.2GDP (100 μM) activates sulfonylurea receptor 2B (SUR2B) linked to the inward-rectifier potassium channel 6.1 (Kir6.1) in HEK293T cells in a patch-clamp assay.3 1.Berg, J.M., Tymoczko, J.L., and Stryer, L.Biochemistry(2002) 2.Vetter, I.R., and Wittinghofer, A.The guanine nucleotide-binding switch in three dimensionsScience294(5545)1299-1304(2001) 3.Yamada, M., Isomoto, S., Matsumoto, S., et al.Sulphonylurea receptor 2B and Kir6.1 form a sulphonylurea-sensitive but ATP-insensitive K+ channelJ. Physiol.499(Pt 3)715-720(1997)