Esp31 Activators
Chemical activators of Esp31 can induce its activity through various intracellular signaling pathways. Phorbol 12-myristate 13-acetate (PMA) directly targets protein kinase C (PKC), which is known to modify proteins via phosphorylation. When PMA activates PKC, this can lead to the phosphorylation of Esp31, provided that Esp31 serves as a substrate for PKC. This modification typically alters the protein's function, potentially enhancing its activity. Similarly, forskolin, by elevating intracellular cAMP levels, activates protein kinase A (PKA), which may then phosphorylate Esp31. Isoproterenol and epinephrine also raise cAMP levels through beta-adrenergic receptor signaling, with isoproterenol directly stimulating adenylate cyclase, and epinephrine acting on adrenergic receptors. The increase in cAMP from both compounds can result in PKA activation, and if Esp31 is a target of PKA, its phosphorylation and activation would follow.
Additionally, ionomycin and A23187 (Calcimycin) serve as calcium ionophores, increasing the intracellular calcium concentration. This rise in calcium can activate calcium-dependent kinases, which might then activate Esp31 if it is calcium-sensitive. The chemicals N6-Benzoyladenosine and rolipram indirectly raise cAMP levels as well; N6-Benzoyladenosine does so by stimulating adenosine receptors, while rolipram inhibits phosphodiesterase 4, preventing cAMP breakdown. Both actions can lead to PKA-mediated phosphorylation of Esp31. ANP (Atrial Natriuretic Peptide), through its receptor, increases intracellular cGMP, which activates protein kinase G (PKG). If Esp31 is a PKG substrate, it would become phosphorylated and activated in response to ANP. Sildenafil and zaprinast, by inhibiting phosphodiesterase 5, also increase cGMP levels, which can activate PKG and therefore Esp31. Lastly, IBMX (Isobutylmethylxanthine) non-specifically inhibits phosphodiesterases, which leads to increased levels of both cAMP and cGMP, potentially activating PKA or PKG, and subsequently Esp31, depending on its sensitivity and role in these pathways.
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| Product Name | CAS # | Catalog # | QUANTITY | Price | Citations | RATING |
|---|---|---|---|---|---|---|
PMA | 16561-29-8 | sc-3576 sc-3576A sc-3576B sc-3576C sc-3576D | 1 mg 5 mg 10 mg 25 mg 100 mg | $41.00 $132.00 $214.00 $500.00 $948.00 | 119 | |
PMA activates protein kinase C (PKC) which is known to phosphorylate a wide variety of protein targets within the cell. Esp31 could be a substrate for PKC, and thus PMA would lead to the phosphorylation and activation of Esp31. | ||||||
Ionomycin | 56092-82-1 | sc-3592 sc-3592A | 1 mg 5 mg | $78.00 $270.00 | 80 | |
Ionomycin functions as a calcium ionophore that increases intracellular calcium concentration. Esp31, if it is calcium-sensitive or part of a calcium-dependent signaling pathway, would be activated by the downstream effects of elevated calcium levels. | ||||||
Isoproterenol Hydrochloride | 51-30-9 | sc-202188 sc-202188A | 100 mg 500 mg | $28.00 $38.00 | 5 | |
Isoproterenol is a beta-adrenergic agonist which activates adenylate cyclase via G-protein-coupled receptor signaling. Increased cAMP levels would then activate PKA, which could phosphorylate and activate Esp31 if it is a substrate of PKA. | ||||||
(−)-Epinephrine | 51-43-4 | sc-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 | ||
Epinephrine, through its action on adrenergic receptors, can lead to the activation of adenylate cyclase and an increase in cAMP. This, in turn, activates PKA which may phosphorylate and activate Esp31 as part of the signaling cascade. | ||||||
Rolipram | 61413-54-5 | sc-3563 sc-3563A | 5 mg 50 mg | $77.00 $216.00 | 18 | |
Rolipram inhibits phosphodiesterase 4, leading to increased cAMP levels in the cell. Elevated cAMP activates PKA, which could phosphorylate and activate Esp31 if it is part of the PKA signaling pathway. | ||||||
A23187 | 52665-69-7 | sc-3591 sc-3591B sc-3591A sc-3591C | 1 mg 5 mg 10 mg 25 mg | $55.00 $131.00 $203.00 $317.00 | 23 | |
A23187 acts as a calcium ionophore, similar to ionomycin, increasing intracellular calcium concentration. Esp31 could be activated by calcium-dependent kinases, which are stimulated by the increase in intracellular calcium levels. | ||||||
Zaprinast (M&B 22948) | 37762-06-4 | sc-201206 sc-201206A | 25 mg 100 mg | $105.00 $250.00 | 8 | |
Zaprinast is another phosphodiesterase 5 inhibitor that increases cGMP levels, leading to PKG activation. PKG could activate Esp31 through phosphorylation if Esp31 is within the PKG signaling pathway. | ||||||
IBMX | 28822-58-4 | sc-201188 sc-201188B sc-201188A | 200 mg 500 mg 1 g | $260.00 $350.00 $500.00 | 34 | |
IBMX is a nonspecific inhibitor of phosphodiesterases, leading to increased levels of both cAMP and cGMP. Increased cAMP can activate PKA, and increased cGMP can activate PKG, either of which may phosphorylate and activate Esp31 if it is a substrate for these kinases. | ||||||