ubiquitylation

Vepdegestrant (ARV-471) is a selective and highly potent estrogen receptor (ER, ESR1) PROTAC degrader with strong degrading activity against the ER protein. By directly degrading the ER protein rather than merely antagonizing its activity, vepdegestrant effectively inhibits the ER signaling pathway and demonstrates significant antitumor activity in ER-positive (ER⁺) breast cancer, with a DC50 value of approximately 2 nM. It is particularly effective against tumors harboring ESR1 mutations.

Apcin is a potent and competitive inhibitor of anaphase-promoting complex/cyclosome (APC/C(Cdc20)) E3 ligase activity. Apcin competitively inhibits APC/C-dependent ubiquitylation by binding to Cdc20 and preventing substrate recognition. It acts by blockin

HM90822 is a novel synthetic apoptotic protein (IAP) antagonist that induces apoptosis in human pancreatic cancer cells through proteasome-dependent degradation of IAPs containing the BIR2/3 structural domain.HM90822 inhibits the expression of XIAP and cIAP1/2 proteins in HM822-sensitive Panc-1 and BxPC-3 cells, induces ubiquitylation of IAPs and promotes induces IAP ubiquitination and promotes proteasome-dependent IAP degradation.

LS-102 is a selective inhibitor of the E3 ligase synoviolin (Syvn1), an astragaloside IV derivative, which attenuates myocardial ischemia/reperfusion injury by inhibiting mitochondrial fission.LS-102 inhibits Syvn1 auto-ubiquitylation, which ameliorates amyloidazole-induced slowing of the heart rate, and is useful for studying cardiovascular diseases.

GS143 is a selective IκBα ubiquitination inhibitor with an IC50 of 5.2 μM for SCFβTrCP1-mediated IκBα ubiquitylation. It suppresses NF-κB activation and transcription of target genes without inhibiting proteasome activity. GS143 has anti-asthm[atic] properties.

PRT4165 (NSC600157) is a potent PRC1-mediated H2A ubiquitylation inhibitor.

FT3967385 is a newly developed compound that functions as a USP30 inhibitor, emulating the genetic deficiency of USP30. This inhibition serves as a catalyst for the amplification of mitochondrial ubiquitylation through the PINK1-PARKIN pathway.

FT385 is a novel USP30 inhibitor, recapitulating genetic loss of USP30 and setting the trigger for PINK1-PARKIN amplification of mitochondrial ubiquitylation.

NRX-0492 is an orally administered compound that efficiently degrades Bruton's tyrosine kinase (BTK) by catalyzing its ubiquitylation and subsequent proteasomal degradation, achieving half-maximal degradation concentrations (DC50) of ≤0.2 nM and 90% degradation concentrations (DC90) of ≤0.5 nM. Additionally, NRX-0492 suppresses B-cell receptor (BCR) signaling, transcriptional activities, and chemokine production by linking a noncovalent BTK-binding domain to Cereblon, an adaptor protein within the E3 ubiquitin ligase complex [1].