UBE3C Activators
The functional mechanisms of UBE3C activators center around their indirect effects on cellular pathways, leading to enhanced ubiquitination activity of UBE3C. These compounds influence various cellular processes, such as proteasomal inhibition, ER stress, and cellular stress responses, which in turn can indirectly stimulate UBE3C's functional activity. Compounds like Geldanamycin and Bortezomib act by inhibiting the function of Hsp90 and the proteasome, respectively. This leads to an increased accumulation of proteins requiring ubiquitination, indirectly necessitating heightened activity of ubiquitin-protein ligases like UBE3C.
Similarly, Tunicamycin and Thapsigargin induce ER stress by inhibiting N-linked glycosylation and disrupting calcium homeostasis. The resulting activation of the unfolded protein response creates a demand for enhanced activity of proteins involved in degrading misfolded proteins, including UBE3C. On the other hand, Lactacystin and Beta-Lactone, which target the proteasome, lead to the accumulation of ubiquitinated proteins. This accumulation acts as a signal for the cell to enhance its ubiquitination processes, indirectly stimulating UBE3C's role in tagging proteins for degradation.
SEE ALSO...
| Product Name | CAS # | Catalog # | QUANTITY | Price | Citations | RATING |
|---|---|---|---|---|---|---|
Geldanamycin | 30562-34-6 | sc-200617B sc-200617C sc-200617 sc-200617A | 100 µg 500 µg 1 mg 5 mg | $39.00 $59.00 $104.00 $206.00 | 8 | |
Geldanamycin binds to heat shock protein 90 (Hsp90) and inhibits its function. This can lead to the destabilization of Hsp90 client proteins, subsequently increasing their ubiquitination and degradation. As UBE3C is involved in proteasomal degradation, geldanamycin's action indirectly enhances UBE3C activity by increasing the pool of substrates requiring ubiquitination. | ||||||
Chloroquine | 54-05-7 | sc-507304 | 250 mg | $69.00 | 2 | |
Chloroquine, by inhibiting lysosomal activity, causes the accumulation of proteins within the cell. This accumulation could indirectly enhance UBE3C activity, as the cell may upregulate ubiquitination processes to compensate. | ||||||
Tunicamycin | 11089-65-9 | sc-3506A sc-3506 | 5 mg 10 mg | $172.00 $305.00 | 66 | |
Tunicamycin inhibits N-linked glycosylation, leading to ER stress and the activation of the unfolded protein response (UPR). UBE3C, involved in degrading misfolded proteins, may be indirectly stimulated as part of the cellular response to increased misfolded proteins. | ||||||
Thapsigargin | 67526-95-8 | sc-24017 sc-24017A | 1 mg 5 mg | $136.00 $446.00 | 114 | |
Thapsigargin induces ER stress by disrupting calcium homeostasis, leading to the activation of UPR. This can enhance UBE3C activity indirectly, as the ligase may be needed to manage the increased presence of misfolded proteins. | ||||||
Lactacystin | 133343-34-7 | sc-3575 sc-3575A | 200 µg 1 mg | $188.00 $575.00 | 60 | |
Beta-Lactone irreversibly binds to the 20S proteasome, inhibiting its activity. This inhibition leads to increased levels of ubiquitinated proteins, potentially enhancing UBE3C's role in tagging proteins for degradation. | ||||||
PI-103 | 371935-74-9 | sc-203193 sc-203193A | 1 mg 5 mg | $33.00 $131.00 | 3 | |
PI-103 is a dual inhibitor of PI3K and mTOR, pathways involved in cell growth and survival. Inhibiting these pathways can lead to cellular stress, potentially enhancing UBE3C's activity in ubiquitinating proteins involved in stress responses. | ||||||