2. Signaling Pathways
  3. PROTAC
  4. Ligands for E3 Ligase

Ligands for E3 Ligase

E3 ligase-recruiting Moiety

Ligands for E3 Ligase

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A PROTAC (Proteolysis Targeting Chimeric Molecule) is a protein degrader comprised of a ligand for E3 ligase (E3 ligase binder), a linker and a ligand for target protein (target binder). The association between an E3 ligase and a target protein induced by a PROTAC will lead to the transfer of ubiquitin and degradation of the targeted protein.

E3 ligases catalyze the transfer of ubiquitin to targeted proteins and determine the specificity of the proteins. There are hundreds of E3 ligases in cells, but only a limited number of them are successfully used in reported PROTACs, such as VHL (von Hippel-Lindau disease tumor suppressor protein), CRBN (Cereblon), MDM2 (the mouse double minute 2 homologue) and IAP (inhibitor of apoptosis).

Ligands for E3 Ligase Isoform Specific Products:

Ligands for E3 Ligase Isoform Comparison
Cat. No. Product Name CAS No. Purity Chemical Structure
  • HY-W087383
    Thalidomide 5-fluoride 835616-61-0 99.9%
    Thalidomide 5-fluoride is Thalidomide-based cereblon ligand that incorporates to the ligand for IRAK4 protein by a linker to form PROTAC IRAK4 degrader-1.
    Thalidomide 5-fluoride
  • HY-103596
    Thalidomide-4-OH 5054-59-1 99.85%
    Thalidomide-4-OH (Cereblon ligand 2) is the Thalidomide-based Cereblon ligand used in the recruitment of CRBN protein. Thalidomide-4-OH (Cereblon ligand 2) can be connected to the ligand for protein by a linker to form PROTACs.
    Thalidomide-4-OH
  • HY-112078
    (S,R,S)-AHPC-Me 1948273-02-6 99.48%
    (S,R,S)-AHPC-Me (VHL ligand 2) is the (S,R,S)-AHPC-based VHL ligand used in the recruitment of the von Hippel-Lindau (VHL) protein. (S,R,S)-AHPC-Me can be used to synthesize ARV-771, a von Hippel-Landau (VHL) E3 ligase-based BET PROTAC degrader. ARV-771 potently degrades BET protein in castration-resistant prostate cancer (CRPC) cells with a DC50 <1 nM.
    (S,R,S)-AHPC-Me
  • HY-103597
    Thalidomide-O-COOH 1061605-21-7 99.85%
    Thalidomide-O-COOH (Cereblon ligand 3) is the Thalidomide-based Cereblon ligand used in the recruitment of CRBN protein. Thalidomide-O-COOH (Cereblon ligand 3) can be connected to the ligand for protein by a linker to form PROTACs.
    Thalidomide-O-COOH
  • HY-23095
    Thalidomide-5-OH 64567-60-8 99.65%
    Thalidomide-5-OH is the Thalidomide-based cereblon ligand used in the recruitment of CRBN protein. Thalidomide-5-OH can be connected to the ligand for protein by a linker to form PROTACs.
    Thalidomide-5-OH
  • HY-125905
    VH032-cyclopropane-F 2306193-99-5 99.92%
    VH032-cyclopropane-F is the VH032-based VHL ligand. VH032-cyclopropane-F can be connected to the ligand for protein (e.g., SMARCA BD ligand) by a linker to form PROTACs (e.g., PROTAC 1). PROTAC 1 is a partial degrader of SMARCA2 and SMARCA4.
    VH032-cyclopropane-F
  • HY-43722
    Lenalidomide-Br 2093387-36-9 99.86%
    Lenalidomide-Br (Compound 41) is an analog of cereblon (CRBN) ligand Lenalidomide for E3 ubiquitin ligase, and is used in the recruitment of CRBN protein. Lenalidomide-Br can be connected to the ligand for protein by a linker to form PROTACs, such as the PROTAC STAT3 degrader SD-36 (HY-129602).
    Lenalidomide-Br
  • HY-145776
    ALV1 2438124-79-7
    ALV1 potently induces degradation of both Ikaros and Helios without unexpected off-target activity. ALV1 binds CRBN with IC50 of 0.55 µM. ALV1 degrades cells stably expressing IKZF1Δ and IKZF2Δ GFP fusions with mCherry reporter with DC50s of 2.5 and 10.3 nM.
    ALV1
  • HY-147158
    ZXH-1-161 2407654-51-5 98.92%
    ZXH-1-161 is a potent cereblon (CRBN) modulator with an IC50 value of 39 nM in MM1.S wild type cells. ZXH-1-161 has selective degradation activity towards GSPT1. ZXH-1-161 can be used for researching multiple myeloma.
    ZXH-1-161
  • HY-125845A
    (S,S,S)-AHPC hydrochloride 2115897-23-7 99.90%
    (S,S,S)-AHPC hydrochloride is a von Hippel-Lindau (VHL) amino building block. (S,S,S)-AHPC (Compound 27) is a ligand used as a negative control for (S,R,S)-AHPC. (S,R,S)-AHPC is the VH032-based VHL ligand used in the recruitment of the VHL protein.
    (S,S,S)-AHPC hydrochloride
  • HY-133144
    Lenalidomide-OH 1416990-08-3 99.48%
    Lenalidomide-OH is an analog of cereblon (CRBN) ligand Lenalidomide for E3 ubiquitin ligase, and is used in the recruitment of CRBN protein. Lenalidomide-OH can be connected to the ligand for protein by a linker to form PROTACs, such as the PROTAC BTK degrader SJF620 (HY-133137).
    Lenalidomide-OH
  • HY-117937
    BC-1215 1507370-20-8 99.93%
    BC-1215 is a F-box protein 3 (Fbxo3) inhibitor. BC-1215 works by antagonizing of Fbxo3 on TRAF cytokine signaling and exhibits a low IC50 in vitro. BC-1215 can be used for the research of inflammation.
    BC-1215
  • HY-14658A
    (S)-Thalidomide 841-67-8 99.65%
    (S)-Thalidomide ((S)-(-)-Thalidomide) is the S-enantiomer of Thalidomide. (S)-Thalidomide has immunomodulatory, anti-inflammatory, antiangiogenic and pro-apoptotic effects. (S)-Thalidomide induces teratogenic effects by binding to cereblon (CRBN) .
    (S)-Thalidomide
  • HY-151716
    Halo-DBCO 1808119-16-5 98.00%
    Halo-DBCO is a click chemistry reagent containing dibenzocyclooctyne (DBCO). Halo-DBCO can be used as a ligand to react with HaloTag to form covalent HaloTag ligand couples.
    Halo-DBCO
  • HY-126456
    (S,R,S)-AHPC-propargyl 2098799-78-9 99.48%
    (S,R,S)-AHPC-propargyl (VH032-propargyl) is a VHL ligand which is used in “click reaction” for PROTACs. (S,R,S)-AHPC-propargyl is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.
    (S,R,S)-AHPC-propargyl
  • HY-128808
    cIAP1 ligand 1 2095244-42-9 99.90%
    cIAP1 ligand 1 is the LCL161 derivative based IAP ligand. cIAP1 ligand 1 can be connected to the ABL ligand for protein by a linker to form SNIPER.
    cIAP1 ligand 1
  • HY-133045
    VHL Ligand 8 2701565-76-4
    VHL Ligand 8 is a VHL ligand. VHL Ligand 8 can be used to synthesize ARD-266 (HY-133020), a highly potent and VHL E3 ligase-based androgen receptor (AR) PROTAC degrader. ARD-266 effectively induces degradation of AR protein in AR-positive LNCaP, VCaP, and 22Rv1 prostate cancer cell lines with DC50 values of 0.2-1 nM.
    VHL Ligand 8
  • HY-111663
    VL285 1448188-57-5 98.84%
    VL285 is a potent VHL ligand with an IC50 of 0.34 μM.
    VL285
  • HY-128837
    Nutlin carboxylic acid 2249750-27-2 98.63%
    Nutlin carboxylic acid (MDM2 ligand 1) is the Nutlin 3-based MDM2 ligand. Nutlin carboxylic acid can be connected to the ligand for protein by a linker to form PROTAC.
    Nutlin carboxylic acid
  • HY-47070
    VH 101, acid 2408341-97-7 98.37%
    VH 101, acid is a functionalized von-Hippel-Lindau (VHL) protein ligand for PROTAC research and development. VH 101, acid contains an E3 ligase ligand plus an alkyl linker with terminal amine ready for conjugation to a target protein ligand.
    VH 101, acid
Cat. No. Product Name / Synonyms Application Reactivity
Ligands for E3 Ligase Isoform Comparison

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