Date published: 2026-4-1

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EULIR Inhibitors

EULIR, a protein whose acronym stands for Endoplasmic Reticulum Unfolded Protein Response Inhibitory Regulator, is a key component of the unfolded protein response (UPR) pathway, a cellular mechanism that maintains protein homeostasis in the endoplasmic reticulum (ER). The UPR is activated in response to ER stress, which occurs when unfolded or misfolded proteins accumulate in the ER lumen, leading to cellular dysfunction and apoptosis. EULIR acts as a negative regulator of the UPR, modulating the activity of key signaling pathways involved in ER stress response. By inhibiting the UPR, EULIR helps hinder excessive activation of ER stress pathways, thereby promoting cell survival and maintaining cellular homeostasis under stress conditions.

The inhibition of EULIR typically involves disrupting its interactions with other proteins or interfering with its functional activity within the UPR pathway. Several mechanisms can be employed to inhibit EULIR function, including the blockade of protein-protein interactions essential for EULIR-mediated inhibition of the UPR. Additionally, small molecule inhibitors or genetic approaches may be utilized to target EULIR directly, thereby impairing its ability to suppress the UPR. By inhibiting EULIR, researchers aim to activate the UPR pathway, which may have implications in diseases associated with ER stress, such as neurodegenerative disorders, cancer, and metabolic diseases. Understanding the mechanisms of EULIR inhibition provides valuable insights into the regulation of ER stress response.

SEE ALSO...

Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

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 peptide aldehyde that inhibits proteasome and ubiquitin-related enzymes, potentially reducing the degradation of proteins ubiquitinated by HECTD1.

Lactacystin

133343-34-7sc-3575
sc-3575A
200 µg
1 mg
$188.00
$575.00
60
(2)

Lactacystin is a naturally occurring compound that irreversibly binds to and inhibits proteasomal activity, indirectly affecting the turnover of proteins modified by HECTD1.

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, potentially limiting the ubiquitination process in which HECTD1 participates.

MLN 4924

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

MLN4924 inhibits the NEDD8-activating enzyme, which is crucial for activating E3 ubiquitin-protein ligases like HECTD1, possibly impacting its function.

Bortezomib

179324-69-7sc-217785
sc-217785A
2.5 mg
25 mg
$135.00
$1085.00
115
(2)

Bortezomib is a dipeptide boronic acid analog that inhibits the 26S proteasome, potentially affecting the degradation of HECTD1-tagged proteins.

Epoxomicin

134381-21-8sc-201298C
sc-201298
sc-201298A
sc-201298B
50 µg
100 µg
250 µg
500 µg
$137.00
$219.00
$449.00
$506.00
19
(2)

Epoxomicin is a natural product that selectively inhibits proteasome activity, which could influence HECTD1-related ubiquitination processes.

IU1

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

IU1 is a small molecule that inhibits the deubiquitinase USP14, potentially affecting the deubiquitination process of substrates targeted by HECTD1.

Thiostrepton

1393-48-2sc-203412
sc-203412A
1 g
5 g
$117.00
$423.00
10
(1)

Thiostrepton is a thiazole antibiotic that inhibits proteasome function and can affect the ubiquitin-proteasome system, indirectly affecting HECTD1.