Date published: 2025-12-24

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OR4K5 Inhibitors

OR4K5 inhibitors are a group of chemical compounds that impact olfactory receptor activity by modulating various signaling pathways and cellular processes within sensory neurons. These inhibitors exert their effects by engaging with transient receptor potential (TRP) channels, such as TRPM8 and TRPA1, which are involved in thermosensation and can compete with olfactory pathways, ultimately leading to a decrease in OR4K5 activity through cross-talk between sensory modalities. Additionally, some of these inhibitors interact with TRPV1 channels, responsible for the sensation of heat, and can alter the sensory neuron environment, indirectly affecting the olfactory receptor's activity by competing for shared intracellular signaling molecules. The non-selective blockade of TRP channels can also diminish the activity of sensory neurons, including those that express OR4K5, by disrupting normal ion flux and the resulting membrane potential changes that are crucial for the initiation and propagation of action potentials. This disruption can lead to a reduction in the receptor's ability to respond to its specific odorant ligands. Furthermore, certain inhibitors may target the lipid raft domains within the neuronal membrane where OR4K5 is localized, altering the microenvironment and affecting receptor conformation and function. By changing the physical and chemical landscape of the membrane, these compounds can affect OR4K5's capacity for odorant detection and signal transduction. In addition to these mechanisms, OR4K5 activity can be influenced by the regulation of G-protein signaling cascades that are integral to the olfactory transduction process. Compounds that modulate the activity of adenylate cyclase, phosphodiesterases, or protein kinases involved in these pathways can lead to an altered response of the receptor to odorants. By increasing the breakdown of cyclic AMP, the secondary messenger in olfactory signal transduction, or by affecting the phosphorylation states of proteins involved in the signaling pathway, these inhibitors can decrease the sensitivity and responsiveness of OR4K5. Some of these compounds may also affect the expression levels or the stability of the OR4K5 protein, leading to a diminished presence on the sensory neuron surface and therefore a reduced functional response to odorant stimuli.
Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

Icilin

36945-98-9sc-201557
sc-201557A
10 mg
50 mg
$89.00
$252.00
9
(1)

Agonist for transient receptor potential (TRP) channels, specifically TRPM8 and TRPA1, which are involved in thermosensation. Activation of these channels can modulate the olfactory signaling by competing with OR4K5-related pathways due to cross-talk between thermosensory and olfactory sensory neurons, leading to inhibition.

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)

Activator of the TRPV1 channel, which is implicated in the sensation of heat. This activation may inhibit OR4K5 function by altering the sensory neuron environment, indirectly affecting olfactory receptor activity due to competition for intracellular signaling molecules and pathways.

(±)-Menthol

89-78-1sc-250299
sc-250299A
100 g
250 g
$38.00
$67.00
(0)

Agonist for TRPM8 channels. Its action can indirectly inhibit OR4K5 by altering sensory neuron signaling through a competitive effect on the shared intracellular pathways that process sensory stimuli, leading to decreased OR4K5 activity.

Ruthenium red

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

Non-selective blocker of TRP channels, which can lead to a decrease in the activity of sensory neurons, indirectly inhibiting the olfactory signaling pathways that OR4K5 is involved in, due to the interplay between different sensory modalities and the shared downstream signaling components.

Chloroform

67-66-3sc-239527A
sc-239527
1 L
4 L
$110.00
$200.00
1
(0)

Can indirectly inhibit OR4K5 by altering the lipid environment of the olfactory receptor neurons, which may change the receptor's conformation or accessibility to its ligands, leading to reduced activity.

Eugenol

97-53-0sc-203043
sc-203043A
sc-203043B
1 g
100 g
500 g
$31.00
$61.00
$214.00
2
(1)

Known to affect ion channels in sensory neurons. It may indirectly inhibit OR4K5 by modulating the activity of these channels, which are part of the signal transduction mechanisms in olfactory neurons, leading to the alteration of intracellular signaling cascades that are essential for OR4K5 function.

Copper(II) sulfate

7758-98-7sc-211133
sc-211133A
sc-211133B
100 g
500 g
1 kg
$45.00
$120.00
$185.00
3
(1)

Known to interact with and inhibit various ion channels and membrane receptors. It may indirectly inhibit OR4K5 by binding to and altering the function of these ion channels in olfactory neurons, affecting the signal transduction processes that OR4K5 participates in.

Pentyl acetate

628-63-7sc-215691
250 ml
$65.00
(0)

Often used as an odorant in olfactory studies, it may saturate olfactory receptors and indirectly inhibit OR4K5 through competitive inhibition, as it could occupy OR4K5 binding sites, preventing the receptor from interacting with its specific ligands.

Methyl Salicylate

119-36-8sc-204802
sc-204802A
250 ml
500 ml
$46.00
$69.00
(1)

A compound with odorant properties that may engage multiple olfactory receptors, potentially causing competitive inhibition of OR4K5 by occupying its ligand-binding sites or altering the receptor conformation, leading to inhibition of its signaling activity.

Diethyl phthalate

84-66-2sc-239738
sc-239738A
25 ml
500 ml
$26.00
$32.00
(0)

Known to affect olfactory receptors and could indirectly inhibit OR4K5 activity by competitive binding or by altering the receptor's conformation, thereby diminishing its ability to signal upon ligand binding.