MEK1 mutations are found in cancer and RASopathies, but their effects remain unclear. Here, the authors reveal a mutant MEK1 structure and qualitative differences in biological properties between the cancer- and RASopathy-associated mutants, providing insights into the pathophysiology, diagnosis, and treatment of these diseases.
- Yuji Kubota
- Yuko Fujioka
- Mutsuhiro Takekawa
