Date published: 2026-3-3

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Olr490 Activators

Chemical activators of Olr490 function through a cascade of cellular signaling events that are initiated by their interaction with specific receptors or enzymes to ultimately result in the protein's phosphorylation and activation. Forskolin, for example, activates Olr490 by directly stimulating adenylyl cyclase to increase cyclic AMP (cAMP) levels within the cell. The elevation in cAMP activates protein kinase A (PKA), which in turn phosphorylates Olr490, leading to its activation. Similarly, Isoproterenol and Epinephrine bind to beta-adrenergic receptors, and Norepinephrine to adrenergic receptors, all of which stimulate adenylyl cyclase activity to raise cAMP levels. This rise in cAMP leads to the activation of PKA, which then phosphorylates and activates Olr490. Dopamine, while known for its interaction with dopamine receptors, can also contribute to this pathway through receptors that influence adenylyl cyclase activity.

Furthermore, Histamine, upon engaging with H2 receptors, and Serotonin, through its 5-HT receptors, can each activate adenylyl cyclase, causing an increase in cAMP and subsequent PKA activation. PKA, once activated, phosphorylates Olr490. Prostaglandin E2, another chemical activator, binds to EP receptors that trigger adenylyl cyclase activity, whereas Glucagon interacts with its own receptor to produce a similar effect. Both pathways lead to PKA-mediated phosphorylation of Olr490. Additionally, Adenosine acts through A2 receptors to raise cAMP and activate PKA, which then phosphorylates Olr490. Lastly, Caffeine and IBMX inhibit phosphodiesterases, which leads to an accumulation of cAMP by preventing its degradation. The increased cAMP levels result in PKA activation, enabling it to phosphorylate and activate Olr490. Each of these chemicals, by elevating cAMP levels and activating PKA, ensures the phosphorylation and functional activation of Olr490.

SEE ALSO...

Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

Isoproterenol Hydrochloride

51-30-9sc-202188
sc-202188A
100 mg
500 mg
$28.00
$38.00
5
(0)

Isoproterenol binds to and activates beta-adrenergic receptors, which stimulates adenylyl cyclase activity and increases cAMP levels. Elevated cAMP activates PKA, which can phosphorylate and activate Olr490.

(−)-Epinephrine

51-43-4sc-205674
sc-205674A
sc-205674B
sc-205674C
sc-205674D
1 g
5 g
10 g
100 g
1 kg
$41.00
$104.00
$201.00
$1774.00
$16500.00
(1)

Epinephrine interacts with adrenergic receptors to increase cAMP production via adenylyl cyclase activation. The resultant PKA activation can lead to the phosphorylation and activation of Olr490.

L-Noradrenaline

51-41-2sc-357366
sc-357366A
1 g
5 g
$326.00
$485.00
3
(0)

Norepinephrine, upon binding to adrenergic receptors, also induces adenylyl cyclase activity, leading to an increase in cAMP and PKA activation. PKA can phosphorylate Olr490, thereby activating it.

Dopamine

51-61-6sc-507336
1 g
$290.00
(0)

Dopamine binds to its receptors, which in certain cases can activate adenylyl cyclase, increase cAMP, and thereby activate PKA. PKA then has the potential to phosphorylate and activate Olr490.

Histamine, free base

51-45-6sc-204000
sc-204000A
sc-204000B
1 g
5 g
25 g
$94.00
$283.00
$988.00
7
(1)

Histamine, through its action on H2 receptors, can activate adenylyl cyclase, leading to an increase in cAMP levels. The activation of PKA by cAMP can result in the phosphorylation and activation of Olr490.

Serotonin hydrochloride

153-98-0sc-201146
sc-201146A
100 mg
1 g
$118.00
$187.00
15
(1)

Serotonin can activate 5-HT receptors that are coupled to G-proteins, leading to increased adenylyl cyclase activity and a subsequent rise in cAMP levels. This elevation in cAMP activates PKA, which could phosphorylate and activate Olr490.

PGE2

363-24-6sc-201225
sc-201225C
sc-201225A
sc-201225B
1 mg
5 mg
10 mg
50 mg
$57.00
$159.00
$275.00
$678.00
37
(1)

Prostaglandin E2 engages EP receptors that can activate adenylyl cyclase, increasing cAMP and activating PKA. PKA is then able to phosphorylate and activate Olr490.

Adenosine

58-61-7sc-291838
sc-291838A
sc-291838B
sc-291838C
sc-291838D
sc-291838E
sc-291838F
1 g
5 g
100 g
250 g
1 kg
5 kg
10 kg
$34.00
$48.00
$300.00
$572.00
$1040.00
$2601.00
$4682.00
1
(0)

Adenosine acting through A2 adenosine receptors can increase cAMP levels, leading to the activation of PKA, which can then phosphorylate and activate Olr490.

Caffeine

58-08-2sc-202514
sc-202514A
sc-202514B
sc-202514C
sc-202514D
50 g
100 g
250 g
1 kg
5 kg
$33.00
$67.00
$97.00
$192.00
$775.00
13
(1)

Caffeine inhibits phosphodiesterases, leading to an increase in cAMP by preventing its breakdown. The resultant rise in cAMP levels leads to PKA activation, which can phosphorylate and activate Olr490.

IBMX

28822-58-4sc-201188
sc-201188B
sc-201188A
200 mg
500 mg
1 g
$260.00
$350.00
$500.00
34
(1)

IBMX also acts as a non-specific inhibitor of phosphodiesterases, which prevents cAMP breakdown, leading to sustained PKA activation. PKA can then phosphorylate and activate Olr490.