To assess which K-Ras mutations were in the active GTP-bound conformation, a Raf-1 binding assay was carried out as described in Materials and Methods. Raf-1 selectively binds GTP-bound Ras (rather than the inactive GDP-
[Paragraph-level] PMCID: PMC2837563 Section: RESULTS PassageIndex: 11
Evidence Type(s): Functional, Oncogenic
Justification: Functional: The passage discusses how specific K-Ras mutations (G12V, L19F, K117N, A146T) are in the active GTP-bound conformation, indicating that these variants alter the molecular function of the K-Ras protein. Oncogenic: The mention of K-Ras mutations being in the active GTP-bound conformation suggests that these somatic variants contribute to tumor development or progression, as they are associated with active signaling pathways in cancer.
Gene→Variant (gene-first): 3845:A146T 3845:G12V 3845:K117N 3845:L19F 3845:R164Q
Genes: 3845
Variants: A146T G12V K117N L19F R164Q