Indolactam V ((-)-Indolactam V) 是一种吲哚生物碱肿瘤促进剂，可激活蛋白激酶 C (PKC)。

PS-432 是 PKCι 和 PKCζ 的变构抑制剂，IC50 分别为 16.9 和 18.5 uM。

Selective cell-permeable peptide inhibitor of protein kinase C (IC50 ~ 0.5 μM). Consists of amino acids 19 - 31 of PKC pseudosubstrate domain linked by a disulphide bridge to a cell permeabilisation Antennapedia domain vector peptide. The Antennapedia peptide is actively taken up by intact cells, at 4 or 37°C, ensuring rapid and effective uptake of the inhibitor peptide. Once inside the cell, the disulphide bonds are subjected to reduction in the cytoplasm leading to release of the inhibitor peptide.