1-nm-pp1

1-NM-PP1 (PP1 Analog II) 是一种有效的Src 家族激酶抑制剂，是一种细胞渗透性 PP1 类似物，对 v-Src-as1 与 c-Fyn-as1 的IC50值分别为 4.3 nM、3.2 nM。

Calyculin A ((-)-Calyculin A) 是日本海洋海绵 CDiscodermia calyxC 中的毒性物质，是一种具有选择性和高效性的蛋白磷酸酶 1 (PP1) 和蛋白磷酸酶 2A (PP2A) 抑制剂， 诱导冷冻保存牛精子的过度激活，抑制人淋巴细胞中辐射诱导的 gammaH2AX DNA 修复病灶的消失。

Tautomycin is a potent and specific protein phosphatases 1 and 2A inhibitor (Kiapp of 0.16 nM and 0.4 nM for PP1 and PP2A, respectively), and is an antifungal antibiotic isolated from the bacterium Streptomyces verticillatus.

The cyanobacterium Nodularia spumigena often contaminates the drinking water of rural communities in developing countries and accumulates in mussels, flounder, and cod from the northern Baltic Sea. Nodularin is a hepatotoxic monocylic pentapeptide produced by the N. spumigena. It is a potent inhibitor of protein phosphatase types 1 (PP1) and 2A (PP2A), exhibiting IC50 values of 1.8 and 0.026 nM, respectively. PP2B is inhibited to a lesser extent with an IC50 of 1.8 μM. No apparent inhibitory effect is observed with PP2C, alkaline phosphatase, acid phosphatase, insulin receptor tyrosine kinase, protein kinase A, phosphorylase kinase, or protein kinase C.

3-IN-PP1是一种针对蛋白激酶D（PKD）家族成员PKD1、PKD2和PKD3具有高效抑制作用的抑制剂，IC50值分别为108、94和108 nM。此外，3-IN-PP1作为一种广谱抗癌剂，能抑制多种肿瘤细胞的生长，适用于癌症研究领域。