Vitamin K5 (Synkamin), a photosensitizer and antimicrobial agent, serves as a specific PKM2 inhibitor, demonstrating IC 50 values of 28, 191, and 120 µM against PKM2, PKM1, and PKL, respectively. It induces apoptosis in colon 26 cells and is utilized in infection and cancer research. Additionally, Vitamin K5 finds application as a preservative in pharmaceuticals, foods, and beverages [1] [2] [3].
