Competitive inhibitor of cGMP-dependent protein kinase (PKG); analog of a substrate peptide corresponding to a phosphorylation site of histone H2B. Competes with synthetic substrates (Ki = 86 mM) but does not inhibit phosphorylation of intact histones by PKG. Inhibits phosphorylation of intact histones by PKA.

HSD17B4、羟基类固醇 (17-β) 脱氢酶 4 抑制剂的 qHTS 测定，活性值为 19.95 μM.

生长抑素（GHIH）是一种肽激素，通过与G蛋白偶联生长抑素受体相互作用并抑制多种次级激素的释放来调节内分泌系统并影响神经传递和细胞增殖。生长抑素抑制胰岛素和胰高血糖素的分泌。