It is a protein kinase activated by phosphorylation of a threonine residue occurring in the domain of the alpha catalytic subunit, along with it the additional subunits STRAD (Ste20-related adaptor protein α) and a protein kinase that suppresses the development of cancer cells LKB1 (liver kinase B1), which is activated even before AMPK. Here, WEE1 is linked to cancer.