Interferon-γ (IFNγ)-activated calcium/calmodulin-dependent protein kinase II (CAMK2) phosphorylates phosphoserine aminotransferase 1 (PSAT1) at serine 337 (S337), enabling glutathione peroxidase 4 (GPX4) interaction, promoting α-ketoglutarate-dependent PHD3-mediated GPX4 proline 159 (P159) hydroxylation and stabilizing GPX4 to counteract ferroptosis.
- Peixiang Zheng
- Zhiqiang Hu
- Daqian Xu