Date published: 2026-2-14

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UBE2D4 Activators

UBE2D4 activators encompass a diverse array of compounds that can influence the ubiquitination process. UBE2D4, being a ubiquitin-conjugating enzyme (E2), plays a pivotal role in the transfer of ubiquitin from the ubiquitin-activating enzyme (E1) to substrate-specific ubiquitin ligases (E3), which then attach ubiquitin to lysine residues on target proteins. Activators of UBE2D4 could enhance this conjugation activity, leading to an increase in the ubiquitination of substrates. Specific activators may function by stabilizing the enzyme-substrate complex, promoting interactions with E1 and E3 enzymes, or increasing the local concentration of active UBE2D4. Such activation would accelerate the tagging of proteins for degradation via the ubiquitin-proteasome system, which is essential for maintaining cellular protein homeostasis.

UBE2D4 activators are compounds that have the capacity to enhance the ubiquitin-conjugation activity of the enzyme UBE2D4. This class of activators encompasses molecules that can indirectly increase the functional activity of UBE2D4 through various mechanisms involving the ubiquitin-proteasome system (UPS) and autophagy, two main pathways for protein degradation in the cell. UBE2D4 activators are a category of compounds that enhance the enzymatic activity of UBE2D4, a ubiquitin-conjugating enzyme involved in the ubiquitin-proteasome system (UPS). These activators function through various mechanisms to elevate the efficiency with which UBE2D4 transfers ubiquitin to target substrates. By stabilizing the enzyme in an active conformation, promoting its interaction with ubiquitin-activating (E1) and ubiquitin ligase (E3) enzymes, or increasing the availability of ubiquitin-loaded E2 enzyme, these activators facilitate the ubiquitination process. This ubiquitination is a critical cellular process responsible for marking proteins for degradation, thus maintaining protein homeostasis within the cell. The chemical diversity of UBE2D4 activators is broad, encompassing small molecules that can directly or indirectly influence the enzyme's activity.

SEE ALSO...

Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

3-Methylcholanthrene

56-49-5sc-252030
sc-252030A
100 mg
250 mg
$388.00
$831.00
2
(1)

Ubiquitin, when attached to substrates, targets them for degradation by the proteasome. The conjugation of ubiquitin to substrates is catalyzed by enzymes including UBE2D4.

MG-132 [Z-Leu- Leu-Leu-CHO]

133407-82-6sc-201270
sc-201270A
sc-201270B
5 mg
25 mg
100 mg
$60.00
$265.00
$1000.00
163
(3)

MG132 is a proteasome inhibitor that leads to an accumulation of ubiquitinated proteins, indirectly enhancing the activity of ubiquitin-conjugating enzymes such as UBE2D4 as part of the feedback mechanism.

Ubiquitin E1 Inhibitor, PYR-41

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

PYR-41 is a selective inhibitor of ubiquitin-activating enzyme E1, leading to reduced ubiquitin conjugation. This can lead to compensatory mechanisms that enhance the activity of downstream enzymes like UBE2D4 to restore ubiquitination levels.

MLN 4924

905579-51-3sc-484814
1 mg
$286.00
1
(0)

MLN4924 inhibits NEDD8 activating enzyme, which can lead to an increase in ubiquitin-conjugation activity by UBE2D4 as a compensatory response to maintain protein homeostasis.

MLN7243

1450833-55-2sc-507338
5 mg
$340.00
(0)

TAK-243 is an inhibitor of ubiquitin-activating enzyme E1, which may lead to upregulation of UBE2D4 activity as a compensatory mechanism within the ubiquitination pathway.

IU1

314245-33-5sc-361215
sc-361215A
sc-361215B
10 mg
50 mg
100 mg
$138.00
$607.00
$866.00
2
(0)

IU1 inhibits the deubiquitinating enzyme USP14, which can lead to an increase in the pool of ubiquitinated substrates, possibly enhancing the functional activity of UBE2D4 in the ubiquitin-proteasome pathway.

BAY 11-7082

19542-67-7sc-200615B
sc-200615
sc-200615A
5 mg
10 mg
50 mg
$62.00
$85.00
$356.00
155
(1)

BAY 11-7082 inhibits NF-κB activation by blocking phosphorylation of IκBα without affecting its ubiquitination, potentially increasing the demand for ubiquitin-conjugating activity by enzymes like UBE2D4.