Squarunkin A is a potent and selective UNC119-cargo interaction inhibitor, interrupting the UNC119A -myristoylated Src N-terminal peptide interaction ( IC 50 =10 nM). Squarunkin A interferes with the activation of Src kinase in cells In Vitro Squarunkin A (2.5 μM, 0.625 μM, 0.078 μM, and 0.01 μM) treatment leads to a concentration-dependent reduction of Src phosphorylation. Squarunkin A does not target the lipoprotein-binding sites of other lipoprotein chaperones, such as PDE6d, AIPL1, and RhoGDI, which bind S-prenylated proteins. Squarunkin A binds to UNC119 in cell lysate and interferes with Src activation. MCE has not independently confirmed the accuracy of these methods. They are for reference only. Form:Solid IC50& Target:IC50: 10 nM (UNC119A-myristoylated Src N-terminal peptide interaction)