KCNH5 Activators
The class of KCNH5 activators includes compounds that modulate various signaling pathways or channel characteristics, indirectly enhancing the activity of KCNH5 channels. These activators interact with different cellular mechanisms that either directly influence the gating properties of KCNH5 or modulate cellular processes that ultimately affect the channel's function. Activators like PMA and NS1643 may interact with KCNH5 or its regulatory proteins to modify gating kinetics or trafficking to the membrane, thereby increasing channel activity. For instance, PMA-activated PKC could phosphorylate KCNH5, altering its conductance or promoting its insertion into the cell membrane, increasing the channel's availability for activation.
Other activators operate by stabilizing the membrane in a way that is conducive to the activation of voltage-dependent channels like KCNH5. Compounds such as 1-EBIO and Retigabine, which primarily enhance the activity of KCNQ channels, could indirectly promote KCNH5 function by maintaining the resting membrane within a range that permits its activation. Anandamide's role in activating PI3K and NS3623's to shift KCNH5 activation to more hyperpolarized further exemplify the indirect modulation of channel activity through cellular signaling events. Benzimidazolone and Bithionol highlight the diverse mechanisms through which KCNH5 activity can be increased. Benzimidazolone's effect on calcium sensitivity could lead to enhanced KCNH5 activity, especially given the channel's role in electrically excitable tissues where calcium signaling is crucial. Meanwhile, Bithionol might impact KCNH5 function by altering the chloride concentration, influencing the electrochemical gradient across the membrane. The modulatory actions of these compounds underline the complex regulatory environment that KCNH5 operates within, where shifts in ion concentrations, membrane, and intracellular signaling cascades can all contribute to the channel's activity. The KCNH5 activator class embodies a range of mechanisms that, while distinct, converge on the common outcome of enhancing KCNH5 channel activity.
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| Product Name | CAS # | Catalog # | QUANTITY | Price | Citations | RATING |
|---|---|---|---|---|---|---|
PMA | 16561-29-8 | sc-3576 sc-3576A sc-3576B sc-3576C sc-3576D | 1 mg 5 mg 10 mg 25 mg 100 mg | $41.00 $132.00 $214.00 $500.00 $948.00 | 119 | |
PMA is an activator of protein kinase C (PKC). PKC phosphorylates a multitude of cellular substrates, including ion channels. For KCNH5, PKC can phosphorylate the channel or its regulatory proteins, which can lead to changes in channel trafficking to the membrane or modulation of its open probability, resulting in increased activity. | ||||||
1-EBIO | 10045-45-1 | sc-201695 sc-201695A | 10 mg 50 mg | $87.00 $325.00 | 1 | |
1-EBIO enhances the activity of KCNQ potassium channels, which have been shown to interact with KCNH channels. The interaction between KCNQ and KCNH channels can affect the membrane potential and the excitability of neurons. By enhancing KCNQ channel activity, 1-EBIO may indirectly promote the functional activity of KCNH5 by stabilizing the membrane potential in a range that is permissive for KCNH5 activation. | ||||||
NS 1643 | 448895-37-2 | sc-204135 sc-204135A | 10 mg 50 mg | $123.00 $473.00 | 3 | |
NS1643 is known to enhance the activity of the KCNH2 (hERG) channels. It increases the open probability and slows the deactivation of the channel. While it has not been directly linked to KCNH5, the structural and functional similarities suggest that NS1643 may interact similarly with KCNH5, stabilizing the open state and enhancing channel activity. | ||||||
Zinc | 7440-66-6 | sc-213177 | 100 g | $48.00 | ||
Zinc Pyrithione is known to enhance the activity of KCNH channels by increasing their sensitivity to voltage, possibly by binding to modulatory sites on the channel or associated proteins. This interaction may stabilize the open conformation of KCNH5, resulting in an increased channel activity. | ||||||
NS 3623 | 343630-41-1 | sc-477734 | 10 mg | $215.00 | ||
NS3623 is a modulator of KCNH2 channels, enhancing their current by shifting the activation voltage towards more negative potentials. Given the similarity between KCNH family members, NS3623 can be anticipated to interact with KCNH5 in a manner that leads to increased channel activity by affecting its voltage sensitivity and conductance properties. | ||||||
Flufenamic acid | 530-78-9 | sc-205699 sc-205699A sc-205699B sc-205699C | 10 g 50 g 100 g 250 g | $27.00 $79.00 $154.00 $309.00 | 1 | |
Flufenamic acid is a nonsteroidal anti-inflammatory drug known to modulate several ion channels, including members of the KCNH family. It acts by altering the gating properties of these channels. Although primarily known as an inhibitor for some channels, it has also been shown to activate others, potentially through a shift in the voltage dependence of activation or by stabilizing open states, which may enhance the activity of KCNH5. | ||||||
Bithionol | 97-18-7 | sc-239383 | 25 g | $79.00 | ||
Bithionol is known to activate chloride channels but also modulates other ion channels. It can indirectly affect the activity of KCNH5 by altering the intracellular chloride concentration, which can influence the electric gradient and thus the driving force for potassium ions, potentially enhancing the current through KCNH5 channels. | ||||||
Quinidine | 56-54-2 | sc-212614 | 10 g | $104.00 | 3 | |
Quinidine, a known antiarrhythmic agent, modulates the activity of various potassium channels. Its effect on KCNH5 may involve a modulation of channel kinetics or an alteration in the interaction with other regulatory proteins, leading to an increase in KCNH5 activity. | ||||||
Pinacidil monohydrate | 85371-64-8 | sc-203198 sc-203198A | 10 mg 50 mg | $51.00 $95.00 | 6 | |
Pinacidil activates ATP-sensitive potassium channels. Through this action, it can indirectly influence the membrane potential and promote conditions that facilitate the activation of voltage-gated potassium channels like KCNH5. | ||||||