Psoromic Acid is a Selective and Covalent Rab-Prenylation Inhibitor Targeting Autoinhibited RabGGTase
作者:Céline Deraeve、Zhong Guo、Robin S. Bon、Wulf Blankenfeldt、Raffaella DiLucrezia、Alexander Wolf、Sascha Menninger、E. Anouk Stigter、Stefan Wetzel、Axel Choidas、Kirill Alexandrov、Herbert Waldmann、Roger S. Goody、Yao-Wen Wu
DOI:10.1021/ja211305j
日期:2012.5.2
vesicular transport, is essential for their function. Rab geranylgeranyl transferase (RabGGTase) is responsible for prenylation of Rab proteins. Recently, RabGGTase inhibitors have been proposed to be potential therapeutics for treatment of cancer and osteoporosis. However, the development of RabGGTase selective inhibitors is complicated by its structural and functional similarity to other protein prenyltransferases
香叶基香叶基异戊二烯与 Rab GTP 酶(细胞内囊泡运输的关键组织者)的翻译后附着对其功能至关重要。Rab 香叶基香叶基转移酶 (RabGGTase) 负责 Rab 蛋白的异戊二烯化。最近,人们提出 RabGGTase 抑制剂是治疗癌症和骨质疏松症的潜在疗法。然而,RabGGTase 选择性抑制剂的开发因其与其他蛋白质异戊二烯基转移酶的结构和功能相似性而变得复杂。在此,我们报告鉴定了天然产物银屑病酸 (PA),其有效且选择性地抑制 RabGGTase,IC(50) 为 1.3 μM。构效关系分析表明了一个最小结构,涉及地苯丙酮核心与 3-羟基和 4-醛基序,用于与 RabGGTase 结合。RabGGTase:PA 复合物的晶体结构分析表明,PA 与 RabGGTase 的类异戊二烯结合位点形成大量疏水相互作用,并且它共价连接到 α 亚基的 N 末端。我们发现,与其他蛋白质异戊二烯转移酶相比,RabGGTase