Topoisomerase I inhibitor 5 is an efficient inhibitor of topoisomerase I, with an IC50 value. It effectively disrupts DNA and inhibits the activity of topoisomerase I. Moreover, it can induce apoptosis in MCF-7 cells and arrest the cell cycle at the G1 phase. Topoisomerase I inhibitor 5 also exhibits potency in reversing P-gp-mediated resistance to Adriamycin [1].
ITK inhibitor 5 (compound 27) is a highly potent and selectively targeted inhibitor of ITK. It exhibits IC50 values of 5.6 nM and 25 nM for ITK and BTK respectively [1].
Microtubule inhibitor 5 (compound 17f) is a highly potent cytotoxic agent that inhibits microtubule function. It exhibits a substantial cytotoxic effect on NCI-H460 cells, with an IC50 value of 154.5 nM. Moreover, this compound demonstrates excellent cell permeability [1].
PKI PKA Inhibitor (5-24) is a synthetic peptide inhibitor of PKA (cAMP-dependent protein kinase) (Ki= 2.3 nM) derived from the active site of the skeletal muscle inhibitor protein.1It mimics the protein substrate by binding to the catalytic site through the arginine-cluster basic subsite.1The prominent enzyme-substrate interaction site occurs where PKA catalytic subunit residues Tyr235and Phe239form a sandwich-like structure with residue Phe10of PKI (5-24).2
Glyoxalase I inhibitor 5 (Compound 9h) is a potent inhibitor of glyoxalase I (Glo-I), with an IC50 value of 1.28 μM. This compound holds promise as an anticancer agent [1].