Date published: 2026-5-16

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RNF157 Activators

RNF157 Activators are a collection of chemical compounds that serve to enhance the functional activity of RNF157 through various indirect mechanisms within cellular signaling pathways. Forskolin, through its ability to elevate intracellular cAMP levels, leads to the activation of protein kinase A (PKA), which has the potential to phosphorylate regulatory proteins that can increase the ubiquitination activity of RNF157. Similarly, the action of Sphingosine-1-phosphate (S1P) via its G-protein-coupled receptors activates the PI3K/AKT pathway, a signaling cascade that can enhance the stability or substrate recognition of RNF157, thereby augmenting its ligase function. Ionomycin, with its capacity to raise intracellular calcium levels, might influence RNF157 by modulating calcium-dependent signaling pathways, and Phorbol 12-myristate 13-acetate (PMA), as a PKC activator, may potentiate RNF157's ubiquitination activity through protein phosphorylation.

Furthermore, inhibitors such as Epigallocatechin gallate (EGCG) and Wortmannin, by modulating protein kinase and PI3K activities, respectively, can indirectly upregulate RNF157's function by alleviating inhibitory phosphorylations on pathways competing with those associated with RNF157. U0126, which targets MEK1/2, alters key signaling nodes that can shift the cellular equilibrium toward enhancing RNF157's ubiquitination processes. Thapsigargin, by perturbing calcium homeostasis, and Staurosporine, through broad-spectrum kinase inhibition, each contribute by activating regulatory proteins or lifting the inhibition on RNF157-associated pathways. Collectively, these activators manipulate the signaling landscape to favor the functional activity of RNF157 without necessitating direct upregulation or modification of the protein itself.

SEE ALSO...

Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

Forskolin

66575-29-9sc-3562
sc-3562A
sc-3562B
sc-3562C
sc-3562D
5 mg
50 mg
1 g
2 g
5 g
$78.00
$153.00
$740.00
$1413.00
$2091.00
73
(3)

Forskolin elevates intracellular cAMP levels which can lead to the activation of PKA. PKA can then phosphorylate proteins that regulate the activity of E3 ubiquitin-protein ligases like RNF157, potentially enhancing its ubiquitination activity.

D-erythro-Sphingosine-1-phosphate

26993-30-6sc-201383
sc-201383D
sc-201383A
sc-201383B
sc-201383C
1 mg
2 mg
5 mg
10 mg
25 mg
$165.00
$322.00
$570.00
$907.00
$1727.00
7
(1)

S1P interacts with its G-protein-coupled receptors to activate downstream signaling pathways such as PI3K/AKT. Activation of AKT can then enhance the function of RNF157 by promoting its stability or its substrate recognition efficiency.

Ionomycin

56092-82-1sc-3592
sc-3592A
1 mg
5 mg
$78.00
$270.00
80
(4)

Ionomycin is a calcium ionophore that increases intracellular calcium levels, which can modulate calcium-dependent signaling pathways that might enhance the enzymatic activity of RNF157 by altering its conformation or interaction with substrates.

8-Bromo-cAMP

76939-46-3sc-201564
sc-201564A
10 mg
50 mg
$126.00
$328.00
30
(1)

8-Bromo-cAMP is a cAMP analog that activates cAMP-dependent pathways, including PKA. PKA activation can result in increased RNF157 activity by phosphorylation of either RNF157 or associated regulatory proteins.

PMA

16561-29-8sc-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
(6)

PMA activates protein kinase C (PKC), which can phosphorylate proteins that modulate the function of RNF157, potentially increasing its ubiquitin ligase activity.

(−)-Epigallocatechin Gallate

989-51-5sc-200802
sc-200802A
sc-200802B
sc-200802C
sc-200802D
sc-200802E
10 mg
50 mg
100 mg
500 mg
1 g
10 g
$43.00
$73.00
$126.00
$243.00
$530.00
$1259.00
11
(1)

EGCG is known to inhibit several protein kinases, which may reduce competitive signaling pathways, thereby indirectly upregulating RNF157 activity through relief of inhibitory phosphorylation events.

Thapsigargin

67526-95-8sc-24017
sc-24017A
1 mg
5 mg
$136.00
$446.00
114
(2)

Thapsigargin disrupts calcium homeostasis by inhibiting the sarcoplasmic/endoplasmic reticulum Ca2+ ATPase (SERCA). Disrupted calcium signaling may enhance RNF157's role by activating calcium-dependent proteins that regulate RNF157's ligase activity.

Wortmannin

19545-26-7sc-3505
sc-3505A
sc-3505B
1 mg
5 mg
20 mg
$67.00
$223.00
$425.00
97
(3)

Wortmannin is an inhibitor of PI3K, which can lead to modulation of the AKT pathway, potentially enhancing RNF157's ubiquitin ligase activity by altering its interaction with substrates.

Staurosporine

62996-74-1sc-3510
sc-3510A
sc-3510B
100 µg
1 mg
5 mg
$82.00
$153.00
$396.00
113
(4)

Staurosporine, a broad-spectrum protein kinase inhibitor, might lead to the selective activation of RNF157 by preventing the phosphorylation-based inhibition of RNF157 or proteins that regulate RNF157 activity.