6p8q | pdb_00006p8q

EGFR in complex with a dihydrodibenzodiazepinone allosteric inhibitor.

spinqualitylabelsall models 6p8q, resolution 1.90Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 6p8q is a 4 chain structure. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: AMP, ANP, EDO, MG, O57 Activity: Receptor protein-tyrosine kinase, with EC number 2.7.10.1 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Disease [EGFR_HUMAN] Defects in EGFR are associated with lung cancer (LNCR) [MIM:211980]. LNCR is a common malignancy affecting tissues of the lung. The most common form of lung cancer is non-small cell lung cancer (NSCLC) that can be divided into 3 major histologic subtypes: squamous cell carcinoma, adenocarcinoma, and large cell lung cancer. NSCLC is often diagnosed at an advanced stage and has a poor prognosis. Function [EGFR_HUMAN] Receptor tyrosine kinase binding ligands of the EGF family and activating several signaling cascades to convert extracellular cues into appropriate cellular responses. Known ligands include EGF, TGFA/TGF-alpha, amphiregulin, epigen/EPGN, BTC/betacellulin, epiregulin/EREG and HBEGF/heparin-binding EGF. Ligand binding triggers receptor homo- and/or heterodimerization and autophosphorylation on key cytoplasmic residues. The phosphorylated receptor recruits adapter proteins like GRB2 which in turn activates complex downstream signaling cascades. Activates at least 4 major downstream signaling cascades including the RAS-RAF-MEK-ERK, PI3 kinase-AKT, PLCgamma-PKC and STATs modules. May also activate the NF-kappa-B signaling cascade. Also directly phosphorylates other proteins like RGS16, activating its GTPase activity and probably coupling the EGF receptor signaling to the G protein-coupled receptor signaling. Also phosphorylates MUC1 and increases its interaction with SRC and CTNNB1/beta-catenin. Isoform 2 may act as an antagonist of EGF action. Publication Abstract from PubMed Allosteric kinase inhibitors represent a promising new therapeutic strategy for targeting kinases harboring oncogenic driver mutations in cancers. Here, we report the discovery, optimization, and structural characterization of allosteric mutant-selective EGFR inhibitors comprising a 5,10-dihydro-11H-dibenzo[b,e][1,4]diazepin-11-one scaffold. Our structure-based medicinal chemistry effort yielded an inhibitor (3) of the EGFR(L858R/T790M) and EGFR(L858R/T790M/C797S) mutants with an IC50 of approximately 10 nM and high selectivity, as assessed by kinome profiling. Further efforts to develop allosteric dibenzodiazepinone inhibitors may serve as the basis for new therapeutic options for targeting drug-resistant EGFR mutations. Discovery and Optimization of Dibenzodiazepinones as Allosteric Mutant-Selective EGFR Inhibitors.,De Clercq DJH, Heppner DE, To C, Jang J, Park E, Yun CH, Mushajiang M, Shin BH, Gero TW, Scott DA, Janne PA, Eck MJ, Gray NS ACS Med Chem Lett. 2019 Oct 22;10(11):1549-1553. doi:, 10.1021/acsmedchemlett.9b00381. eCollection 2019 Nov 14. PMID:31749909 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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