E3 ligase Ligand 9 - CAS 87304-15-2

E3 ligase Ligand 9 is a ligand for E3 ubiquitin ligase. E3 ligase Ligand 9 can be connected to the ligand for protein by a linker to form PROTACs or SNIPERs. PROTACs are inducers of ubiquitination-mediated degradation of cancer-promoting proteins.

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Molecular Formula
C21H32N2O6
Molecular Weight
408.49

E3 ligase Ligand 9

    • Specification
      • Solubility
        10 mM in DMSO
        Storage
        Please store the product under the recommended conditions in the Certificate of Analysis.
        Shipping
        Room temperature in continental US; may vary elsewhere
        Synonyms
        2-[[2-hydroxy-3-[(2-methylpropan-2-yl)oxycarbonylamino]-4-phenylbutanoyl]amino]-4-methylpentanoic acid
    • Properties
      • InChI Key
        DLADKYKXROHIAB-UHFFFAOYSA-N
        InChI
        InChI=1S/C21H32N2O6/c1-13(2)11-16(19(26)27)22-18(25)17(24)15(12-14-9-7-6-8-10-14)23-20(28)29-21(3,4)5/h6-10,13,15-17,24H,11-12H2,1-5H3,(H,22,25)(H,23,28)(H,26,27)
        Canonical SMILES
        CC(C)CC(C(=O)O)NC(=O)C(C(CC1=CC=CC=C1)NC(=O)OC(C)(C)C)O
    • Reference Reading
      • 1. E3 Ligase Ligands in Successful PROTACs: An Overview of Syntheses and Linker Attachment Points
        Aleša Bricelj, Christian Steinebach, Robert Kuchta, Michael Gütschow, Izidor Sosič Front Chem. 2021 Jul 5;9:707317.doi: 10.3389/fchem.2021.707317.eCollection 2021.
        Proteolysis-targeting chimeras (PROTACs) have received tremendous attention as a new and exciting class of therapeutic agents that promise to significantly impact drug discovery. These bifunctional molecules consist of a target binding unit, a linker, and an E3 ligase binding moiety. The chemically-induced formation of ternary complexes leads to ubiquitination and proteasomal degradation of target proteins. Among the plethora of E3 ligases, only a few have been utilized for the novel PROTAC technology. However, extensive knowledge on the preparation of E3 ligands and their utilization for PROTACs has already been acquired. This review provides an in-depth analysis of synthetic entries to functionalized ligands for the most relevant E3 ligase ligands, i.e. CRBN, VHL, IAP, and MDM2. Less commonly used E3 ligase and their ligands are also presented. We compare different preparative routes to E3 ligands with respect to feasibility and productivity. A particular focus was set on the chemistry of the linker attachment by discussing the synthetic opportunities to connect the E3 ligand at an appropriate exit vector with a linker to assemble the final PROTAC. This comprehensive review includes many facets involved in the synthesis of such complex molecules and is expected to serve as a compendium to support future synthetic attempts towards PROTACs.
        2. E3 ligase ligand chemistries: from building blocks to protein degraders
        Izidor Sosič, Aleša Bricelj, Christian Steinebach Chem Soc Rev. 2022 May 10;51(9):3487-3534.doi: 10.1039/d2cs00148a.
        In recent years, proteolysis-targeting chimeras (PROTACs), capable of achieving targeted protein degradation, have proven their great therapeutic potential and usefulness as molecular biology tools. These heterobifunctional compounds are comprised of a protein-targeting ligand, an appropriate linker, and a ligand binding to the E3 ligase of choice. A successful PROTAC induces the formation of a ternary complex, leading to the E3 ligase-mediated ubiquitination of the targeted protein and its proteasomal degradation. In over 20 years since the concept was first demonstrated, the field has grown substantially, mainly due to the advancements in the discovery of non-peptidic E3 ligase ligands. Development of small-molecule E3 binders with favourable physicochemical profiles aided the design of PROTACs, which are known for breaking the rules of established guidelines for discovering small molecules. Synthetic accessibility of the ligands and numerous successful applications led to the prevalent use of cereblon and von Hippel-Lindau as the hijacked E3 ligase. However, the pool of over 600 human E3 ligases is full of untapped potential, which is why expanding the artillery of E3 ligands could contribute to broadening the scope of targeted protein degradation. In this comprehensive review, we focus on the chemistry aspect of the PROTAC design process by providing an overview of liganded E3 ligases, their chemistries, appropriate derivatisation, and synthetic approaches towards their incorporation into heterobifunctional degraders. By covering syntheses of both established and underexploited E3 ligases, this review can serve as a chemistry blueprint for PROTAC researchers during their future ventures into the complex field of targeted protein degradation.
        3. F-box only protein 9 is an E3 ubiquitin ligase of PPARγ
        Kyeong Won Lee, Soo Heon Kwak, Young Do Koo, Yun-Kyung Cho, Hak Mo Lee, Hye Seung Jung, Young Min Cho, Young Joo Park, Sung Soo Chung, Kyong Soo Park Exp Mol Med. 2016 May 20;48(5):e234.doi: 10.1038/emm.2016.31.
        Peroxisome proliferator-activated receptor gamma (PPARγ) is a critical regulator of carbohydrate and lipid metabolism, adipocyte differentiation and inflammatory response. Post-translational modification of PPARγ and its degradation involve several pathways, including the ubiquitin-proteasome system. Here, we identified F-box only protein 9 (FBXO9) as an E3 ubiquitin ligase of PPARγ. We screened interacting partners of PPARγ using immunoprecipitation and mass spectrometric analysis and identified FBXO9 as an E3 ubiquitin ligase of PPARγ. FBXO9 directly interacted with PPARγ through the activation function-1 domain and ligand-binding domain. FBXO9 decreased the protein stability of PPARγ through induction of ubiquitination. We found that the F-box motif of FBXO9 was required for its ubiquitination function. The activity of PPARγ was significantly decreased by FBXO9 overexpression. Furthermore, FBXO9 overexpression in 3T3-L1 adipocytes resulted in decreased levels of endogenous PPARγ and suppression of adipogenesis. These results suggest that FBXO9 is an important enzyme that regulates the stability and activity of PPARγ through ubiquitination.
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