Date published: 2026-5-30

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GABAA Rγ3 Inhibitors

GABA_A Rγ3 inhibitors are a class of compounds that can antagonize or modulate the activity of the GABA_A Rγ3 receptor, a subtype of GABA_A receptors. These inhibitors operate by various mechanisms to decrease the activity of these receptors, which are pivotal for mediating inhibitory neurotransmission in the central nervous system. Some compounds, such as bicuculline and gabazine, act as competitive antagonists, binding directly to the site where GABA would typically bind and preventing its action. Others, like picrotoxin and TBPS, block the receptor's ion channel by binding to different sites, preventing chloride ions from flowing into the neuron and thus inhibiting neuronal hyperpolarization.

Further diversifying the mechanisms of inhibition, compounds like flumazenil and secobarbital interact with allosteric sites on the receptor complex. Flumazenil is known for its ability to inhibit the modulatory effects of benzodiazepines on GABA_A receptors, while secobarbital, at inhibitory concentrations, can exert its effects by binding to the barbiturate binding site, influencing the receptor's configuration and function. Anesthetics such as tetracaine also display allosteric inhibitory properties on GABA_A receptors. The variety of binding sites and mechanisms demonstrates the complexity of modulating GABAergic signaling. Inhibitors are naturally occurring substances that can antagonize GABA_A receptors, leading to a decrease in GABAergic inhibitory effects. The wide range of chemicals that can influence GABA_A Rγ3 delineates a diverse chemical space, encompassing competitive antagonists, channel blockers, allosteric modulators, and convulsants. Each molecule engagesIt appears there has been a misunderstanding.

SEE ALSO...

Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

(+)-Bicuculline

485-49-4sc-202498
sc-202498A
50 mg
250 mg
$82.00
$281.00
(1)

Bicuculline is a competitive antagonist of GABA_A receptors. It binds to the same site as GABA and thus prevents GABA from activating the receptor.

Picrotoxin

124-87-8sc-202765
sc-202765A
sc-202765B
1 g
5 g
25 g
$67.00
$286.00
$1326.00
11
(3)

Picrotoxin blocks GABA_A receptor channels by binding to the receptor at a site distinct from the GABA binding site, inhibiting channel opening.

Gabazine

105538-73-6sc-211552
10 mg
$714.00
3
(0)

Gabazine is a competitive antagonist at GABA_A receptors and can inhibit the receptor's response to GABA.

Penicillin G sodium salt

69-57-8sc-257971
sc-257971A
sc-257971B
sc-257971C
sc-257971D
1 mg
10 mg
1 g
5 g
100 g
$26.00
$37.00
$47.00
$171.00
$265.00
1
(0)

Penicillin, at high concentrations, can nonspecifically bind to GABA_A receptors and inhibit their function.

Flumazenil (Ro 15-1788)

78755-81-4sc-200161
sc-200161A
25 mg
100 mg
$110.00
$370.00
10
(1)

Flumazenil is a competitive antagonist of the benzodiazepine site on GABA_A receptors, which modulates the receptor's activity.

Tetracaine

94-24-6sc-255645
sc-255645A
sc-255645B
sc-255645C
sc-255645D
sc-255645E
5 g
25 g
100 g
500 g
1 kg
5 kg
$66.00
$309.00
$500.00
$1000.00
$1503.00
$5000.00
(0)

Tetracaine is a local anesthetic that can allosterically inhibit GABA_A receptors at higher concentrations.

Ethylcyclohexane

1678-91-7sc-228084
25 g
$52.00
(0)

PTX, or pentylenetetrazole, is a convulsant that can antagonize GABA_A receptors, hindering their inhibitory effects.