7OK4
Crystal Structure of KRasG13C in Complex with Nucleotide-based covalent Inhibitor bdaGDP
Summary for 7OK4
| Entry DOI | 10.2210/pdb7ok4/pdb |
| Descriptor | Isoform 2B of GTPase KRas, bdaGDP (3 entities in total) |
| Functional Keywords | gtpase, ras, kras, krasg13c, nucleotide analogues, bdagdp, hydrolase |
| Biological source | Homo sapiens (Human) |
| Total number of polymer chains | 1 |
| Total formula weight | 20047.29 |
| Authors | Goebel, L.,Mueller, M.P.,Rauh, D. (deposition date: 2021-05-17, release date: 2022-08-03, Last modification date: 2024-11-20) |
| Primary citation | Goebel, L.,Kirschner, T.,Koska, S.,Rai, A.,Janning, P.,Maffini, S.,Vatheuer, H.,Czodrowski, P.,Goody, R.S.,Muller, M.P.,Rauh, D. Targeting oncogenic KRasG13C with nucleotide-based covalent inhibitors. Elife, 12:-, 2023 Cited by PubMed Abstract: Mutations within Ras proteins represent major drivers in human cancer. In this study, we report the structure-based design, synthesis, as well as biochemical and cellular evaluation of nucleotide-based covalent inhibitors for KRasG13C, an important oncogenic mutant of Ras that has not been successfully addressed in the past. Mass spectrometry experiments and kinetic studies reveal promising molecular properties of these covalent inhibitors, and X-ray crystallographic analysis has yielded the first reported crystal structures of KRasG13C covalently locked with these GDP analogues. Importantly, KRasG13C covalently modified with these inhibitors can no longer undergo SOS-catalysed nucleotide exchange. As a final proof-of-concept, we show that in contrast to KRasG13C, the covalently locked protein is unable to induce oncogenic signalling in cells, further highlighting the possibility of using nucleotide-based inhibitors with covalent warheads in KRasG13C-driven cancer. PubMed: 36972177DOI: 10.7554/eLife.82184 PDB entries with the same primary citation |
| Experimental method | X-RAY DIFFRACTION (1.7 Å) |
Structure validation
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