ST13

ST13, an ortho-hydroxyanilide, is a selective, slow- and tight-binding HDAC1 and HDAC2 inhibitor with IC50s of 23 nM and 49 nM, respectively. ST13 shows a weak inhibition of HDAC3 (IC50 = 4.30 μM) and HDAC6 (IC50 > 10 μM) . The induced fit mechanism of ST13 proceeds through a two-step process: first, the enzyme and inhibitor rapidly form a collision complex (EI), which then slowly transforms into the stable complex E*I. ST13 induces apoptosis in cancer cells. ST13 can be used for the study of melanoma and triple-negative breast[1].