2. Signaling Pathways
  3. Metabolic Enzyme/Protease
  4. E1/E2/E3 Enzyme

E1/E2/E3 Enzyme

E1 activating enzyme; E2 conjugating enzyme; E3 ligating enzyme; Ubiquitin activating enzyme; Ubiquitin conjugating enzyme; Ubiquitin ligase

E1/E2/E3 Enzyme

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Ubiquitin (UB) is a protein modifier that regulates many essential cellular processes. To initiate protein modification by UB, the E1 enzyme activates the C-terminal carboxylate of UB to launch its transfer through the E1-E2-E3 cascade onto target proteins. The E1 enzyme is the activating enzyme, to which ubiquitin is attached in an ATP-dependent reaction by a thioester bond. The E2 enzyme is the conjugating enzyme, to which the ubiquitin is transferred from the E1. The E3 is the ubiquitin ligase, which directly or indirectly catalyzes the transfer of the ubiquitin to the target protein (the substrate), with the formation of an isopeptide bond.

Cat. No. Product Name Effect Purity Chemical Structure
  • HY-U00442
    CTX1
    		Inhibitor
    CTX1 is a p53 activator that overcomes HdmX-mediated p53 repression. CTX1 exhibits potent anti-cancer activity in a mouse acute myeloid leukemia (AML) model system.
    CTX1
  • HY-157416
    COP1-ATGL modulator 1
    		99.31%
    COP1-ATGL modulator 1 (86) is an orally active modulator for COP1-ATGL axis. COP1-ATGL modulator 1 (86) could increase ATGL protein expression, reduce ATGL ubiquitination and COP1 autoubiquitination, and diminish lipid accumulation in hepatocytes in the nanomolar range.
    COP1-ATGL modulator 1
  • HY-122615B
    SPOP-IN-6b dihydrochloride
    		Inhibitor 99.70%
    SPOP-IN-6b dihydrochloride is a potent speckle-type POZ protein (SPOP) inhibitor with an IC50 of 3.58 μM.
    SPOP-IN-6b dihydrochloride
  • HY-129531
    MuRF1-IN-1
    		98.16%
    MuRF1-IN-1 is a muscle ring finger 1 (MuRF1) inhibitor that attenuates skeletal muscle atrophy and dysfunction in cardiac cachexia.
    MuRF1-IN-1
  • HY-158239
    MS181
    		Inhibitor 98.36%
    MS181 (compound 1) is a potent cereblon (CRBN)-recruiting and EED-binding polycomb repressive complex 1 (PRC1) PROTAC degrader. MS181 decreases the expression of EED, EZH2, SUZ12, BMI1 and RING1B. MS181 shows antiproliferative activity (Strtucture Note: Red, EED binder (HY-158771); Blue, CRBN ligand (HY-41547); Black, Linker HY-131717).
    MS181
  • HY-103046
    UbcH5c-IN-1
    		Inhibitor 99.84%
    UbcH5c-IN-1 (compound 6d) is a potent and selective small-molecule inhibitor of Ubiquitin-conjugating enzyme UbcH5c, with a Kd of 283 nM for E2 UbcH5c-IN-1 by covalent binding with Cys85. A promising lead compound for the development of new antirheumatoid arthritis (RA) agent.
    UbcH5c-IN-1
  • HY-P3709A
    TRAF6 peptide TFA
    		Inhibitor
    TRAF6 peptide TFA is a specific TRAF6-p62 inhibitor. TRAF6 peptide TFA potently abrogates NGF-dependent TrkA ubiquitination. TRAF6 peptide TFA has good research potential in neurological diseases such as alzheimer's disease (AD), parkinson's, ALS, head trauma, epilepsy and stroke.
    TRAF6 peptide TFA
  • HY-141448
    NRX-2663
    		Inhibitor 98.20%
    NRX-2663 is an enhancer of the interaction between β-catenin, and its cognate E3 ligase, SCFβ-TrCP. NRX-2663 enhances the binding of β-catenin peptide for β-TrCP with an EC50 of 22.9 μM and a Kd of 54.8 nM.
    NRX-2663
  • HY-161251
    SPOP-IN-2
    SPOP-IN-2 (compound E1) is a Speckle-type POZ protein (SPOP) inhibitor with IC50 of 0.58 μM, which disrupt the SPOP-subtrate interaction and selectively inhibits proliferation of ccRCC.
    SPOP-IN-2
  • HY-W062696
    BC-1382
    		Inhibitor 99.53%
    BC-1382 is a potent ubiquitin E3 ligase HECTD2 inhibitor that specificly disrupts the HECTD2/PIAS1 interaction (IC50≈ 5 nM).Anti-inflammatory activity.
    BC-1382
  • HY-W184800
    MuRF1-IN-2
    		Inhibitor 99.05%
    MuRF1-IN-2 (Example 3) is a MuRF1 inhibitor. MuRF1-IN-2 can be used for research of muscle wasting conditions, of skeletal or cardial muscle atrophy.
    MuRF1-IN-2
  • HY-148130A
    Rugonersen sodium
    Rugonersen sodium is a locked-nucleic acid (LNA)- modified antisense oligonucleotides (ASOs), and results in reduction of ubiquitin-protein ligase E3A (UBE3A) silencing. Angelman syndrome (AS) sodium is a severe neurodevelopmental disorder caused by the loss of neuronal E3 ligase UBE3A, Rugonersen has been used for AS reasearch.
    Rugonersen sodium
  • HY-163638
    BRD4 degrader-1
    		99.85%
    BRD4 degrader-1 (Compound ML 1-50) is a monovalent and covalent molecular glue BRD4 degrader. BRD4 degrader-1 targets DCAF16 (E3 ligase) and degrades both the long and short isoforms of BRD4 in cells.
    BRD4 degrader-1
  • HY-162938
    Skp2 inhibitor 3
    		Inhibitor 98.07%
    Skp2 inhibitor 3 (E35), an antitumor agent, is a potent S‑Phase Kinase-associated Protein 2 (SKP2) inhibitor, with an IC50 of 4.86 μM for Skp2-Cks1 binding. Skp2 inhibitor 3 (E35) significantly inhibits colony formation and migration, as well as arrests the cell cycle at the S-phase.
    Skp2 inhibitor 3
  • HY-W264347
    DCN1-UBC12-IN-4
    		Inhibitor
    DCN1-UBC12-IN-4 (compound 5p) is an inhibitor of DCN1-UBC12, with an IC50 greater than 10000 nM, and it exhibits anti-tumor activity.
    DCN1-UBC12-IN-4
  • HY-70027A
    p53 and MDM2 proteins-interaction-inhibitor dihydrochloride
    		Inhibitor 99.56%
    p53 and MDM2 proteins-interaction-inhibitor dihydrochloride is an inhibitor of the interaction between p53 and MDM2 proteins.
    p53 and MDM2 proteins-interaction-inhibitor dihydrochloride
  • HY-12287
    YH239-EE
    		Inhibitor 98.28%
    YH239-EE, ethyl ester of the free carboxylic acid compound YH239, is a potent p53-MDM2 antagonizing and apoptosis-inducing agent.
    YH239-EE
  • HY-148130
    Rugonersen
    		Activator
    Rugonersen (RG6091; RO7248824) is a locked-nucleic acid (LNA)- modified antisense oligonucleotides (ASOs), and results in reduction of ubiquitin-protein ligase E3A (UBE3A) silencing. Angelman syndrome (AS) is a severe neurodevelopmental disorder caused by the loss of neuronal E3 ligase UBE3A, Rugonersen has been used for AS reasearch.
    Rugonersen
  • HY-151799
    P62-RNF168 agonist-1
    		Agonist 98.62%
    P62-RNF168 agonist-1 (compound 5a) is a low cytotoxicity P62-RNF168 agonist that enhances the interaction between P62 and RNF168. P62-RNF168 agonist-1 induces a reduction in H2A ubiquitination mediated by RNF168 and impairs homologous recombination-mediated DNA repair. P62-RNF168 agonist-1 also inhibits the growth of xenograft tumors in mice in a dose-dependent manner.
    P62-RNF168 agonist-1
  • HY-160928
    Smurf1 modulator-1
    		Inhibitor 99.76%
    Smurf1 modulator-1 (Compound 20) is a selective inhibitor for Smad ubiquitination regulatory factor 1 (Smurf1), with IC50 of 180 nM.
    Smurf1 modulator-1
Cat. No. Product Name / Synonyms Species Source
Cat. No. Product Name / Synonyms Application Reactivity