PCSK9 ligand 1 is a small molecule ligand for proprotein convertase substilisin-like kexin type 9 (PCSK9) and shows high affinity to PCSK9(Ki of 107 nM).
PCSK9-IN-2 is a newly developed small molecule that effectively inhibits the protein-protein interaction (PPI) between PCSK9 and LDLR. It has been found to have a potent inhibitory activity with an IC50 value of 7.57 μM.