T-type calcium channel α1I Activators
T-type calcium channel α1I Activators encompass a range of chemical compounds that, through distinct mechanisms, increase the functional activity of this specific ion channel. Nickel(II) chloride and zinc sulfate act directly on T-type calcium channels, with Nickel(II) chloride enhancing activity by stabilizing the open state of the channel, facilitating increased calcium entry. Zinc sulfate similarly potentiates channel activity, potentially by interacting with regulatory sites on the protein. Mibefradil, while known as a channel inhibitor at high doses, at lower concentrations, can paradoxically stabilize T-type calcium channels in an open state, enhancing their activity. Compounds like Ethosuximide and Amiloride, although not direct activators, modulate the channels' gating thresholds and intracellular pH levels, respectively, leading to a greater propensity for channel opening.
Other compounds, such as Nifedipine and Bay K 8644, traditionally associatedwith L-type calcium channels, can indirectly influence T-type calcium channel α1I. Nifedipine can shift the voltage dependence of activation of T-type channels, subtly enhancing their activity, while Bay K 8644 alters cellular calcium dynamics in a way that can secondarily increase T-type channel activity. Pregabalin and Gabapentin, known for their binding to the auxiliary α2δ subunit, may also indirectly increase the activity of T-type calcium channel α1I by modifying overall calcium homeostasis and channel kinetics. Furthermore, Verapamil and Magnesium sulfate, although typically acting as inhibitors, have been suggested to modulate T-type channel activity under specific conditions, potentially enhancing it. Finally, Tetrandrine has a direct potentiating effect on the channel by altering its biophysical properties, thereby promoting calcium influx and channel activity, demonstrating the diverse mechanisms by which these activators can enhance T-type calcium channel α1I function.
SEE ALSO...
| Product Name | CAS # | Catalog # | QUANTITY | Price | Citations | RATING |
|---|---|---|---|---|---|---|
Nickel(II) chloride | 7718-54-9 | sc-236169 sc-236169A | 100 g 500 g | $68.00 $188.00 | ||
Nickel(II) chloride can selectively enhance T-type calcium channel α1I activity by binding to specific sites on the channel, causing a conformational change that stabilizes the open state, thus increasing calcium influx into the cell. | ||||||
Ethosuximide | 77-67-8 | sc-211431 | 1 g | $306.00 | ||
Ethosuximide, traditionally used as an anticonvulsant, can increase the activity of T-type calcium channels indirectly by modulating the threshold for channel activation, resulting in an increased likelihood of channel opening. | ||||||
Zinc | 7440-66-6 | sc-213177 | 100 g | $48.00 | ||
Zinc sulfate can potentiate the activity of T-type calcium channels by binding to modulatory sites on the channel or associated proteins, thereby facilitating the opening of the channel under certain physiological conditions. | ||||||
Amiloride • HCl | 2016-88-8 | sc-3578 sc-3578A | 25 mg 100 mg | $22.00 $57.00 | 6 | |
Amiloride can indirectly enhance T-type calcium channel α1I activity by modulating intracellular pH levels, which affects channel gating properties and can lead to an increased probability of channel opening. | ||||||
Nifedipine | 21829-25-4 | sc-3589 sc-3589A | 1 g 5 g | $59.00 $173.00 | 15 | |
While Nifedipine is a dihydropyridine L-type calcium channel blocker, at specific concentrations, it can have a permissive effect on T-type calcium channel α1I by shifting the voltage dependence of activation. | ||||||
(±)-Bay K 8644 | 71145-03-4 | sc-203324 sc-203324A sc-203324B | 1 mg 5 mg 50 mg | $84.00 $196.00 $817.00 | ||
Bay K 8644 is an L-type calcium channel activator that can have an indirect enhancing effect on T-type calcium channel α1I by altering cellular calcium dynamics, which can secondarily increase the activity of T-type channels. | ||||||
Gabapentin | 60142-96-3 | sc-201481 sc-201481A sc-201481B | 20 mg 100 mg 1 g | $53.00 $94.00 $135.00 | 7 | |
Gabapentin, similar to Pregabalin, binds to the α2δ subunit of voltage-gated calcium channels. It may have an indirect effect on T-type calcium channel α1I by altering the kinetics of channel opening and increasing channel activity. | ||||||
Verapamil | 52-53-9 | sc-507373 | 1 g | $374.00 | ||
Verapamil, a phenylalkylamine calcium channel blocker, primarily inhibits L-type calcium channels, but at specific dosages, it can modulate the activity of T-type calcium channel α1I, leading to an enhancement of their activity. | ||||||
Tetrandrine | 518-34-3 | sc-201492 sc-201492A | 100 mg 250 mg | $56.00 $100.00 | 9 | |
Tetrandrine has been shown to potentiate T-type calcium channel α1I by binding to the channel and altering its biophysical properties, which can lead to increased channel activity and calcium influx. | ||||||