2. Signaling Pathways
  3. Membrane Transporter/Ion Channel
  4. Potassium Channel

Potassium Channel

KcsA

Potassium Channel

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Potassium channels are the most widely distributed type of ion channel and are found in virtually all living organisms. They form potassium-selective pores that span cell membranes. Potassium channels are found in most cell types and control a wide variety of cell functions. Potassium channels function to conduct potassium ions down their electrochemical gradient, doing so both rapidly and selectively. Biologically, these channels act to set or reset the resting potential in many cells. In excitable cells, such asneurons, the delayed counterflow of potassium ions shapes the action potential. By contributing to the regulation of the action potential duration in cardiac muscle, malfunction of potassium channels may cause life-threatening arrhythmias. Potassium channels may also be involved in maintaining vascular tone.

Cat. No. Product Name Effect Purity Chemical Structure
  • HY-16689
    VU 0240551
    		Inhibitor 99.97%
    VU 0240551 is a potent neuronal K-Cl cotransporter KCC2 inhibitor (IC50=560 nM) and is selective versus NKCC1. VU 0240551 also inhibits hERG and L-type Ca2+ channels. VU 0240551 attenuates GABA-induced hyperpolarization of P cells, produces a positive shift in the P cell GABA reversal potential and enhances P cell synaptic transmission.
    VU 0240551
  • HY-122114
    ICA-27243
    		Activator 99.18%
    ICA-27243 is a selective, potent and orally active KCNQ2/Q3 potassium channel opener with an EC50 of 0.38 μM. ICA-27243 is less effective at activating KCNQ4 and KCNQ3/Q5. ICA-27243 has antiepileptic and anticonvulsant effects.
    ICA-27243
  • HY-B0432
    Propafenone
    		Inhibitor 99.93%
    Propafenone (SA-79), a sodium-channel blocker, acts an antiarrhythmic agent. Propafenone also has high affinity for the β receptor (IC50=32 nM). Propafenone blocks the transient outward current (Ito) and the sustained delayed rectifier K current (Isus) with IC50 values of 4.9 μm and 8.6 μm, respectively. Propafenone suppresses esophageal cancer proliferation through inducing mitochondrial dysfunction and induce apoptosis.
    Propafenone
  • HY-110153
    NS19504
    		Activator 99.93%
    NS19504 is a Ca2+-activated K+ channel (BK channel, KCa1.1 channel) activator (EC50=11.0 µM) with relaxing effect on bladder smooth muscle spontaneous phasic contractions.
    NS19504
  • HY-W011509
    CyPPA
    		Activator 99.99%
    CyPPA is a positive modulator of hSK3 and hSK2, with EC50 values of 14 μM and 5.6 μM, repectively. CyPPA is inactive on both hSK1 and hIK channels[1]
    CyPPA
  • HY-14946
    Amifampridine
    		Antagonist 99.74%
    Amifampridine (3,4-Diaminopyridine) is an orally active, potent and cell permeable voltage-gated potassium (Kv) channel blocker (PCB). Amifampridine is efficacy in the reversal of BoNT/A (HY-P79153) intoxication. Amifampridine increases transmitter release from neuromuscular junctions (NMJs). Amifampridine can be used for Lambert-Eaton myasthenic syndrome (LEMS) research.
    Amifampridine
  • HY-108588
    NS5806
    		Activator 99.92%
    NS5806, a potent potassium current activator, increases KV4.3/KChIP2 peak current amplitudes with an EC50 of 5.3 μM. NS5806 slows KV4.3 and KV4.2 current dacay in channel complexes containing KChIP2.
    NS5806
  • HY-B0753
    Gliclazide
    		Inhibitor 99.96%
    Gliclazide (S1702) is a whole-cell beta-cell ATP-sensitive potassium currents blocker with an IC50 of 184 nM. Gliclazide is used as an antidiabetic.
    Gliclazide
  • HY-33350
    Clofilium tosylate
    		Inhibitor 99.84%
    Clofilium tosylate, a potassium channel blocker, induces apoptosis of human promyelocytic leukemia (HL-60) cells via Bcl-2-insensitive activation of caspase-3. Antiarrhythmic agent.
    Clofilium tosylate
  • HY-N0747
    Oxypeucedanin
    		Inhibitor 99.50%
    Oxypeucedanin is a furocoumarin derivative isolated from Angelica dahurica. Oxypeucedanin is a selective open-channel blocker, inhibits the hKv1.5 current with an IC50 value of 76 nM. Oxypeucedanin prolongs cardiac action potential duration (APD), is a potential antiarrhythmic agent for atrial fibrillation. Oxypeucedanin induces cell apoptosis through inhibition of cancer cell migration.
    Oxypeucedanin
  • HY-B1467
    Domiphen bromide
    		Inhibitor 99.61%
    Domiphen bromide is a chemical antiseptic and a quaternary ammonium compound, used as a cationic surfactant.
    Domiphen bromide
  • HY-16916
    NS1643
    		Activator 99.04%
    NS1643 is a partial agonist of human ether-a-go-go-related gene (hERG) K+ channels with an EC50 of 10.5 μM. NS1643 inhibits the growth of breast cancer tumors in TNBC mouse models. NS1643 inhibits cell migration and invasion of breast cancer cells.
    NS1643
  • HY-108591
    L-364,373
    		Activator 99.67%
    L-364,373 (R-L3) is a voltage-gated Kv7.1 (KCNQ1)/mink channels activator. L-364,373 activates Iks (slow delayed rectifier potassium current) and shortens action potential duration in guinea pig cardiac myocytes, and suppresses early afterdepolarizations in rabbit ventricular myocytes.
    L-364,373
  • HY-P1280
    Margatoxin
    		Inhibitor 98.44%
    Margatoxin, an alpha-KTx scorpion toxin, is a high affinity inhibitor of Kv1.3 (Kd=11.7 pM). Margatoxin inhibits the Kv1.2 (Kd=6.4 pM) and Kv1.1 (Kd=4.2 nM). Margatoxin, a 39 amino-acid-long peptide, is isolated from the venom of the scorpion Centruroides margaritatus and widely used in ion channel research.
    Margatoxin
  • HY-B0259
    Indapamide
    		Inhibitor 99.71%
    Indapamide is an orally active sulphonamide diuretic agent, that can reduce blood pressure by decreasing vascular reactivity and peripheral vascular resistance. Indapamide is also can reduce left ventricular hypertrophy.
    Indapamide
  • HY-N1469
    Kaurenoic acid
    		99.56%
    Kaurenoic acid is a diterpene derived from Sphagneticola trilobata. Kaurenoic acid has antibacterial, anti-inflammatory, anticonvulsant, analgesic, and aortic vasodilating effects.
    Kaurenoic acid
  • HY-111655
    SKA-31
    		Activator 99.66%
    SKA-31 is a potent potassium channel activator with EC50s of 260 nM, 1.9 μM, 2.9 μM, and 2.9 μM for KCa3.1, KCa2.2, KCa2.1 and KCa2.3, respectively. SKA-31 potentiates endothelium-derived hyperpolarizing factor response and lowers blood pressure.
    SKA-31
  • HY-12533
    Disopyramide
    		Inhibitor 99.93%
    Disopyramide (Dicorantil) is a class IA antiarrhythmic agent with efficacy in ventricular and atrial arrhythmias. Disopyramide blocks the fast inward sodium current of cardiac muscle and prolongs the duration of cardiac action potentials. Disopyramide inhibits HERG encoded potassium channels. Disopyramide also exhibits complex protein binding, and has a potent negative inotropic action.
    Disopyramide
  • HY-15565
    APD668
    		Inhibitor 99.10%
    APD668 is a potent, selective and orally active agonist of G-protein coupled receptor GPR119, with EC50s of 2.7 nM and 33 nM for hGPR119 and rGPR119, respectively. APD668 shows no significant inhibition of any of the five major CYP isoforms with the exception of CYP2C9 (Ki=0.1 μM). APD668 can be used for the research of steatohepatitis and diabetes.
    APD668
  • HY-B0267
    Oxybutynin
    		Inhibitor 99.55%
    Oxybutynin is an anticholinergic agent, which inhibits vascular Kv channels in a concentration-dependent manner, with an IC50 of 11.51 μM. Oxybutynin is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.
    Oxybutynin
Cat. No. Product Name / Synonyms Application Reactivity