8QUG

KRAS-G12C in Complex with Compound 1

Summary for 8QUG

• Entry DOI: 10.2210/pdb8qug/pdb
• Descriptor: GTPase KRas, GUANOSINE-5'-DIPHOSPHATE, MAGNESIUM ION, ... (5 entities in total)
• Functional Keywords: kras, gtpase, cancer, transferase
• Biological source: Homo sapiens (human)
• Total number of polymer chains: 1
• Total formula weight: 20301.21

Authors

Fischer, G.,Kratochvil, B. (deposition date: 2023-10-16, release date: 2023-12-06, Last modification date: 2024-10-02)

Primary citation

Popow, J.,Farnaby, W.,Gollner, A.,Kofink, C.,Fischer, G.,Wurm, M.,Zollman, D.,Wijaya, A.,Mischerikow, N.,Hasenoehrl, C.,Prokofeva, P.,Arnhof, H.,Arce-Solano, S.,Bell, S.,Boeck, G.,Diers, E.,Frost, A.B.,Goodwin-Tindall, J.,Karolyi-Oezguer, J.,Khan, S.,Klawatsch, T.,Koegl, M.,Kousek, R.,Kratochvil, B.,Kropatsch, K.,Lauber, A.A.,McLennan, R.,Olt, S.,Peter, D.,Petermann, O.,Roessler, V.,Stolt-Bergner, P.,Strack, P.,Strauss, E.,Trainor, N.,Vetma, V.,Whitworth, C.,Zhong, S.,Quant, J.,Weinstabl, H.,Kuster, B.,Ettmayer, P.,Ciulli, A.
Targeting cancer with small-molecule pan-KRAS degraders.
Science, 385:1338-1347, 2024

PubMed Abstract: Mutations in the Kirsten rat sarcoma viral oncogene homolog (KRAS) protein are highly prevalent in cancer. However, small-molecule concepts that address oncogenic KRAS alleles remain elusive beyond replacing glycine at position 12 with cysteine (G12C), which is clinically drugged through covalent inhibitors. Guided by biophysical and structural studies of ternary complexes, we designed a heterobifunctional small molecule that potently degrades 13 out of 17 of the most prevalent oncogenic KRAS alleles. Compared with inhibition, KRAS degradation results in more profound and sustained pathway modulation across a broad range of KRAS mutant cell lines, killing cancer cells while sparing models without genetic KRAS aberrations. Pharmacological degradation of oncogenic KRAS was tolerated and led to tumor regression in vivo. Together, these findings unveil a new path toward addressing KRAS-driven cancers with small-molecule degraders.

PubMed: 39298590
DOI: 10.1126/science.adm8684

Experimental method

X-RAY DIFFRACTION (1.56 Å)