8S8C image
Deposition Date 2024-03-06
Release Date 2024-07-10
Last Version Date 2024-10-23
Entry Detail
PDB ID:
8S8C
Title:
Structure of Kras in complex with inhibitor MK-1084
Biological Source:
Source Organism:
Homo sapiens (Taxon ID: 9606)
Host Organism:
Method Details:
Experimental Method:
Resolution:
1.90 Å
R-Value Free:
0.22
R-Value Work:
0.17
R-Value Observed:
0.18
Space Group:
H 3 2
Macromolecular Entities
Polymer Type:polypeptide(L)
Molecule:GTPase KRas
Gene (Uniprot):KRAS
Mutations:G12C
Chain IDs:A
Chain Length:170
Number of Molecules:1
Biological Source:Homo sapiens
Primary Citation

Abstact

Oncogenic mutations in the RAS gene account for 30% of all human tumors; more than 60% of which present as KRAS mutations at the hotspot codon 12. After decades of intense pursuit, a covalent inhibition strategy has enabled selective targeting of this previously "undruggable" target. Herein, we disclose our journey toward the discovery of MK-1084, an orally bioavailable and low-dose KRASG12C covalent inhibitor currently in phase I clinical trials (NCT05067283). We leveraged structure-based drug design to identify a macrocyclic core structure, and hypothesis-driven optimization of biopharmaceutical properties to further improve metabolic stability and tolerability.

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