Clarification of the Binding Mode of Teleocidin and Benzolactams to the Cys2 Domain of Protein Kinase Cδ by Synthesis of Hydrophobically Modified, Teleocidin-Mimicking Benzolactams and Computational Docking Simulation
作者:Yasuyuki Endo、Shunji Takehana、Michihiro Ohno、Paul E. Driedger、Silvia Stabel、Miho Y. Mizutani、Nobuo Tomioka、Akiko Itai、Koichi Shudo
DOI:10.1021/jm970704s
日期:1998.4.1
structures and the activities of these compounds has attracted much attention because of the marked structural dissimilarities. The benzolactam 5, with an eight-membered lactam ring and benzene ring instead of the nine-membered lactam ring and indole ring of teleocidins, reproduces the active ring conformation and biological activities of teleocidins. Herein we describe the synthesis of benzolactams with
众所周知,佛波酸酯(12-O-十四烷酰佛波酸酯13-乙酸酯; TPA)和远心亲和素是有效的肿瘤启动子,并通过竞争性结合酶来激活蛋白激酶C(PKC)。由于明显的结构差异,化学结构与这些化合物的活性之间的关系引起了人们的广泛关注。具有八元内酰胺环和苯环而不是九元内酰胺环和telociocids的吲哚环的苯并内酰胺5再现了telocicidins的活性环构象和生物学活性。在本文中,我们描述了在各个位置具有疏水取代基的苯并内酰胺的合成。结构活性数据表明,C-2和C-9之间的疏水区域的存在以及C-8处的空间因子在生物活性的出现中起关键作用。我们还通过计算模拟了电离骨蛋白和修饰的苯并内酰胺分子对接在PKCdelta与佛波醇13-乙酸酯的晶体复合物中观察到的Cys2结构域结构。Teleocidin和苯并内酰胺类与佛波醇13-乙酸酯很好地位于同一腔内。与蛋白质氢键合的三个官能团中,两个氢原子与佛波醇13-