Date published: 2026-5-30

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RNF166 Activators

RNF166 Activators encompass a diverse range of chemical compounds that indirectly enhance the ubiquitin ligase activity of RNF166 through various cellular pathways. Forskolin, by increasing intracellular cAMP, indirectly boosts the ubiquitination capacity of RNF166 through the activation of PKA, which phosphorylates potential substrates for RNF166. Similarly, Ionomycin, through its calcium ionophore activity, raises intracellular calcium levels that might promote calcium-dependent ubiquitination processes where RNF166 could be more active. Phorbol 12-myristate 13-acetate (PMA) functions as a PKC activator, and the subsequent signal transduction modifications could result in PKC-phosphorylated substrates that are preferentially targeted by RNF166.

The activity of RNF166 is also potentially augmented by compounds that affect protein phosphorylation and stability. Calyculin A and Okadaic acid, both inhibitors of protein phosphatases PP1 and PP2A, might increase the pool of phosphorylated proteins, which are recognized and ubiquitinated by RNF166. Inhibition of GSK-3 by Lithium chloride and SB216763 is likely to lead to the accumulation of GSK-3 substrates, enhancing the variety of substrates available for RNF166-mediated ubiquitination. Lastly, PYR-41 inhibits the ubiquitin-activating enzyme E1, potentially leading to an increased pool of free ubiquitin which RNF166 can utilize to tag substrates for degradation, thereby indirectly enhancing its functional activity.

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 directly raises cAMP levels, which can lead to the activation of PKA. PKA phosphorylates various substrates including those that may be ubiquitinated by RNF166, thus enhancing RNF166's E3 ligase activity.

Ionomycin

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

Ionomycin acts as a calcium ionophore, elevating intracellular calcium concentration and potentially stimulating calcium-dependent ubiquitination processes where RNF166 could be more active.

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 is a PKC activator that modulates signal transduction pathways; activated PKC could phosphorylate substrates that are better recognized by RNF166, increasing its ubiquitination activity.

Calyculin A

101932-71-2sc-24000
sc-24000A
10 µg
100 µg
$163.00
$800.00
59
(3)

As an inhibitor of protein phosphatases PP1 and PP2A, Calyculin A may increase phosphorylation levels of proteins, which could be recognized by RNF166, thus enhancing its E3 ubiquitin ligase activity.

Okadaic Acid

78111-17-8sc-3513
sc-3513A
sc-3513B
25 µg
100 µg
1 mg
$291.00
$530.00
$1800.00
78
(4)

Okadaic acid is also a potent inhibitor of PP1 and PP2A, potentially leading to an increased pool of phosphorylated substrates for RNF166-mediated ubiquitination.

Lithium

7439-93-2sc-252954
50 g
$214.00
(0)

Lithium chloride inhibits GSK-3, which may lead to the stabilization and accumulation of proteins that are potential substrates for RNF166, enhancing its activity.

SB-216763

280744-09-4sc-200646
sc-200646A
1 mg
5 mg
$71.00
$202.00
18
(1)

SB216763 is a GSK-3 inhibitor that, similar to lithium chloride, may lead to an increase in potential substrates for RNF166, thereby potentially enhancing its ubiquitin ligase function.

Ubiquitin E1 Inhibitor, PYR-41

418805-02-4sc-358737
25 mg
$360.00
4
(1)

PYR-41 is a ubiquitin-activating enzyme E1 inhibitor, leading to reduced ubiquitin conjugation and potentially increasing the available pool of free ubiquitin for RNF166-mediated ligase activity.