Date published: 2025-12-24

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OTOP1 Activators

OTOP1 Activators encompass a diverse array of chemical compounds that indirectly influence the functional activity of OTOP1, a proton-selective ion channel that plays a role in maintaining ion homeostasis and sensing extracellular pH. For instance, benzamil and amiloride, both selective blockers of ENaCs, indirectly contribute to the enhancement of OTOP1 activity by increasing intracellular sodium, which could alter the ionic environment conducive to OTOP1 function. Additionally, capsaicin's activation of TRPV1 channels and the subsequent neuronal depolarization may fine-tune the proton gradients, thereby potentially amplifying OTOP1's proton channel activity. Zinc sulfate, providing bioavailable zinc ions, could potentiate OTOP1 by modulating its gating mechanisms, while ruthenium red and gadolinium chloride, which inhibit calcium and mechanosensitive channels respectively, may create intracellular conditions that favor OTOP1 activation, particularly under acidic or mechanical stress-induced scenarios.

Furthermore, the biochemical landscape that OTOP1 operates within is intricately modulated by other activators like quinine and verapamil, which, by altering potassium and calcium channel activity, respectively, could shift the electrochemical gradient in a way that enhances proton flow through OTOP1. The chloride channel inhibitors baicalein and niflumic acid may also play a role in modulating OTOP1 activity by impacting the chloride-proton antiport system, leading to a favorable electrochemical potential for OTOP1 activity. Ethoxyzolamide's role in reducing hydrogen carbonate reabsorption hints at its potential to induce intracellular acidification, a state under which OTOP1 could be more active. Lastly, bafilomycin A1, by inhibiting the H+ ATPase pump, could effectively elevate the intracellular proton concentration, thus augmenting the gradient necessary for proton conduction through OTOP1. Collectively, these chemical agents, through their targeted modulation of cellular ion dynamics and membrane potentials, indirectly enhance the functional activity of OTOP1, contributing to its proton-selective conductance without the need for direct interaction with the protein itself.

SEE ALSO...

Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

Capsaicin

404-86-4sc-3577
sc-3577C
sc-3577D
sc-3577A
50 mg
250 mg
500 mg
1 g
$94.00
$173.00
$255.00
$423.00
26
(1)

Capsaicin binds to the transient receptor potential vanilloid 1 (TRPV1) channel, causing depolarization in sensory neurons. This depolarization could influence proton gradients and thus potentially enhance OTOP1 activity by modulating the electrochemical environment the protein operates in.

Zinc

7440-66-6sc-213177
100 g
$47.00
(0)

Zinc is a known modulator of various ion channels and receptors. Zinc sulfate can increase the availability of zinc ions, which may potentiate the proton channel function of OTOP1 by stabilizing the channel structure or influencing its gating mechanisms.

Amiloride • HCl

2016-88-8sc-3578
sc-3578A
25 mg
100 mg
$22.00
$56.00
6
(2)

Amiloride is an ENaC inhibitor similar to benzamil. It can also increase intracellular sodium concentration, which in turn can enhance OTOP1 activity as a result of altered sodium/proton exchange or membrane potential changes that affect proton flux through OTOP1.

Ruthenium red

11103-72-3sc-202328
sc-202328A
500 mg
1 g
$184.00
$245.00
13
(1)

Ruthenium Red is an inhibitor of certain calcium channels. By inhibiting extracellular calcium entry, it may cause intracellular acidification, which could provide a favorable condition for the activation of OTOP1, as it might be more active under acidic conditions.

Gadolinium(III) chloride

10138-52-0sc-224004
sc-224004A
5 g
25 g
$150.00
$350.00
4
(1)

Gadolinium ions block various ion channels, including stretch-activated ones. By modulating the activity of these channels, gadolinium chloride can alter the mechanical stress on cells, which may indirectly enhance OTOP1 activity if mechanical stretch influences its gating.

Quinine

130-95-0sc-212616
sc-212616A
sc-212616B
sc-212616C
sc-212616D
1 g
5 g
10 g
25 g
50 g
$77.00
$102.00
$163.00
$347.00
$561.00
1
(0)

Quinine is a known blocker of certain potassium channels. By blocking these channels, quinine can alter the membrane potential, potentially enhancing the activity of OTOP1 by shifting the electrochemical gradient in a manner that favors proton flow through the channel.

Verapamil

52-53-9sc-507373
1 g
$367.00
(0)

Verapamil is a calcium channel blocker that could lead to reduced calcium influx, potentially causing intracellular conditions that indirectly activate OTOP1 if the protein is sensitive to calcium-dependent signaling cascades or cellular pH changes.

Baicalein

491-67-8sc-200494
sc-200494A
sc-200494B
sc-200494C
10 mg
100 mg
500 mg
1 g
$31.00
$41.00
$159.00
$286.00
12
(1)

Baicalein is known to inhibit certain chloride channels. By inhibiting these channels, it could affect the ionic balance across the membrane, which may indirectly enhance the activity of OTOP1, particularly if chloride ions influence the proton selectivity or gating of the channel.

Niflumic acid

4394-00-7sc-204820
5 g
$31.00
3
(1)

Niflumic acid is a known blocker of chloride channels. Similar to baicalein, by altering chloride flux, niflumic acid may affect the function of OTOP1, potentially enhancing its activity through changes in membrane potential or ionic gradients that affect proton conduction.

Bafilomycin A1

88899-55-2sc-201550
sc-201550A
sc-201550B
sc-201550C
100 µg
1 mg
5 mg
10 mg
$96.00
$250.00
$750.00
$1428.00
280
(6)

Bafilomycin A1 is a specific inhibitor of the H+ ATPase pump. By inhibiting this pump, it can increase intracellular proton concentration, which may indirectly enhance the proton-selective channel function of OTOP1 due to a higher proton gradient.