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-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-160876
    BC-1901S
    BC-1901S is a proteasome-independent NRF2 activator and stabilizer. BC-1901S binds to DCAF1 (E3 ligase subunit) and disrupts NRF2/DCAF1 interaction, and activates NRF2 by inhibiting NRF2 ubiquitination in a KEAP1-independent manner. BC-1901S shows anti-inflammatory effect in a murine model of LPS-induced acute lung injury.
    BC-1901S
  • 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-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-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-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-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
  • HY-W340839
    p53-MDM2-IN-1
    		Inhibitor 99.91%
    p53-MDM2-IN-1 (Example 30) is an inhibitor of p53-MDM2/X protein interaction with an Ki value of 23.35 µM. p53-MDM2-IN-1 can be used for anti-tumor research.
    p53-MDM2-IN-1
  • HY-W004883
    3-Amino-4,6-dimethylpyridine
    		Inhibitor 99.87%
    3-Amino-4,6-dimethylpyridine (5A-DMP) is a UHRF1 inhibitor that targets the Arg-binding cavity site within the UHRF1 TTD domain. 3-Amino-4,6-dimethylpyridine disrupts the interaction between UHRF1 and LIG1, interfering with DNA methylation, and can be utilized in cancer research.
    3-Amino-4,6-dimethylpyridine
  • HY-W340313
    p53-MDM2-IN-4
    		Inhibitor 99.79%
    p53-MDM2-IN-4 (Example 4) is an inhibitor of p53-MDM2/X protein interaction, with a Ki value of 3.079 μM. p53-MDM2-IN-4 can be used in anti-tumor research.
    p53-MDM2-IN-4
  • HY-103436
    NSC624206
    		Inhibitor
    NSC624206 is an inhibitor of ubiquitin E1 (UBA1), with an IC50 of ~9 μM. NSC624206 specifically blocks ubiquitin-thioester formation (IC50=13 μM) but has no effect on ubiquitin adenylation.
    NSC624206
  • HY-15954B
    NVP-CGM097 sulfate
    		Inhibitor 98.82%
    NVP-CGM097 sulfate is a potent and selective MDM2 inhibitor with IC50 of 1.7±0.1 nM for hMDM2.
    NVP-CGM097 sulfate
  • HY-141482
    WSB1 Degrader 1
    		Inhibitor 99.81%
    WSB1 Degrader 1 is a poten and orally active WSB1 (WD repeat and SOCS box-containing 1) degrader. WSB1 Degrader 1 has anticancer metastatic effects.
    WSB1 Degrader 1
  • HY-125858A
    MI-1061 TFA
    		Inhibitor
    MI-1061 TFA is a potent, orally bioavailable, and chemically stable MDM2 (MDM2-p53 interaction) inhibitor (IC50=4.4 nM; Ki=0.16 nM). MI-1061 TFA potently activates p53 and induces apoptosis in the SJSA-1 xenograft tumor tissue in mice. Anti-tumor activity.
    MI-1061 TFA
  • HY-156768
    Cbl-b-IN-12
    		Inhibitor
    Cbl-b-IN-12 (Example 10) is a casitas B-lineage lymphoma-b (CBL-B) inhibitor with an IC50 of <100 nM.
    Cbl-b-IN-12
  • HY-151358
    SENP2-IN-1
    		Inhibitor 98.05%
    SENP2-IN-1 (compound 77) is a selective SENP2 inhibitor. SENP2-IN-1 shows inhibitory activities with IC50s of 1.3, 0.69 and 22.7 μM for SENP1, SENP2 and SENP5, respectively. SENP2-IN-1 can be used for the research of cancer.
    SENP2-IN-1
  • HY-109045A
    Teslexivir hydrochloride
    		Inhibitor 99.34%
    Teslexivir (BTA074) hydrochloride is a potent antiviral agent. Teslexivir hydrochloride is a potent and selective inhibitor of the interaction between two essential viral proteins, E1 and E2, an association that is a necessary step in the DNA replication and thus viral production for Human Papilloma Virus (HPV) 6 and 11. Teslexivir hydrochloride can be used for condyloma research.
    Teslexivir hydrochloride
  • HY-160924
    MS147
    		Inhibitor
    MS147 is a VHL-based PROTAC degrader of PRC1 (Polycomb Repressive Complex 1). The dissociation constants (Kd) of MS147 for EED (Embryonic Ectoderm Development) and VHL (Von Hippel-Lindau) are 3.0 μM and 450 nM, respectively. MS147 specifically binds to the EED protein through its EED-binding moiety; EED is a core component of PRC2 (Polycomb Repressive Complex 2) and interacts with the core components of PRC1, BMI1 (B-lymphoma Mo-MLV insertion region 1 homolog) and RING1B (Ring Finger Protein 1B). By this binding, MS147 is able to recruit BMI1 and RING1B near to VHL. Through the degradation of BMI1 and RING1B, MS147 reduces the level of H2AK119ub (histone H2A lysine 119 ubiquitination), affecting the proliferation of cancer cells. (Blue: VHL ligand (HY-125845), Black: linker ; Pink: PRC1 ligand (HY-158771)).
    MS147
  • HY-161470
    WS-384
    		Inhibitor 98.23%
    WS-384 is a dual LSD1 and DCN1-UBC12 protein-protein interaction inhibitor with oral activity, with IC50 values of 338.79 nM and 14.81 nM, respectively. WS-384 possesses anticancer activity and can cause cell cycle arrest, DNA damage, and induce apoptosis. WS-384 can be used in the research of non-small cell lung cancer (NSCLC).
    WS-384
  • HY-156766
    Cbl-b-IN-10
    		Inhibitor
    Cbl-b-IN-10 (Compound 463) is a casitas B-lineage lymphoma-b (Cbl-b) and c-Cbl inhibitor with IC50s of 6.0 nM and 3.5 nM, respectively.
    Cbl-b-IN-10
Cat. No. Product Name / Synonyms Species Source
Cat. No. Product Name / Synonyms Application Reactivity