7u8h

Discovery of a KRAS G12C Inhibitor in vivo Tool Compound starting from an HSQC-NMR based Fragment Hit

spinqualitylabelsall models 7u8h, resolution 1.70Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 7u8h is a 4 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 1.702Å Ligands: 2XO, GDP, LX6, MG Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function A0A6D2XGP1_PONAB Publication Abstract from PubMed Activating mutations in KRAS are the most frequent oncogenic alterations in cancer. The oncogenic hotspot position 12, located at the lip of the switch II pocket, offers a covalent attachment point for KRAS(G12C) inhibitors. To date, KRAS(G12C) inhibitors have been discovered by first covalently binding to the cysteine at position 12 and then optimizing pocket binding. We report on the discovery of the in vivo active KRAS(G12C) inhibitor BI-0474 using a different approach, in which small molecules that bind reversibly to the switch II pocket were identified and then optimized for non-covalent binding using structure-based design. Finally, the Michael acceptor containing warhead was attached. Our approach offers not only an alternative approach to discovering KRAS(G12C) inhibitors but also provides a starting point for the discovery of inhibitors against other oncogenic KRAS mutants. Fragment Optimization of Reversible Binding to the Switch II Pocket on KRAS Leads to a Potent, In Vivo Active KRAS(G12C) Inhibitor.,Broker J, Waterson AG, Smethurst C, Kessler D, Bottcher J, Mayer M, Gmaschitz G, Phan J, Little A, Abbott JR, Sun Q, Gmachl M, Rudolph D, Arnhof H, Rumpel K, Savarese F, Gerstberger T, Mischerikow N, Treu M, Herdeis L, Wunberg T, Gollner A, Weinstabl H, Mantoulidis A, Kramer O, McConnell DB, W Fesik S J Med Chem. 2022 Oct 27. doi: 10.1021/acs.jmedchem.2c01120. PMID:36300829 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also GTPase KRas 3D structures

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