Description_x000D_ Packaging_x000D_ 10 mg in serum bottle_x000D_ Biochem/physiol Actions_x000D_ Wortmannin is a potent and specific phosphatidylinositol 3-kinase (PI3-K) inhibitor with an IC50 of 2-4 nM. Inhibition of PI3-K/Akt signal transduction cascade enhances the apoptotic effects of radiation or serum withdrawal and blocks the antiapoptotic effect of cytokines. Inhibition of PI3-K by wortmannin also blocks many of the short-term metabolic effects induced by insulin receptor activation._x000D_ Features and Benefits_x000D_ This compound is a featured product for Cyclic Nucleotide and Kinase Phosphatase Biology research. Discover more featured Cyclic Nucleotide and Kinase Phosphatase Biology products. Learn more about bioactive small molecules for other areas of research at sigma.com/discover-bsm._x000D_ This compound is also offered as part of Sigma′s Library of Pharmacologically Active Compounds (LOPAC®1280), a biologically annotated collection of high-quality, ready-to-screen compounds. Click here to learn more._x000D_ This compound is featured on the G Proteins (Heterotrimeric) and Phosphoinositide Kinases pages of the Handbook of Receptor Classification and Signal Transduction. To browse other handbook pages, click here._x000D_ Legal Information_x000D_ LOPAC is a registered trademark of Sigma-Aldrich Co. LLC