Modification of Bafilomycin Structure to Efficiently Synthesize Solid-State NMR Probes that Selectively Bind to Vacuolar-Type ATPase
作者:Hajime Shibata、Hiroshi Tsuchikawa、Tatsuru Hayashi、Nobuaki Matsumori、Michio Murata、Takeo Usui
DOI:10.1002/asia.201403299
日期:2015.4
Bafilomycin (Baf) is one of the most potent inhibitors of vacuolar‐type ATPase, which is strongly implicated in age‐related diseases. However, the binding site of the antibiotic on the protein remains unclear because of the complexity of the structure of Baf bound to the target subunit in the transmembrane region. For conducting structural studies by applying solid‐state NMR, which is one of the most
Bafilomycin(Baf)是液泡型ATPase的最有效抑制剂之一,与年龄相关疾病密切相关。然而,由于结合在跨膜区域中的靶亚基的Baf的结构的复杂性,抗生素在蛋白质上的结合位点仍然不清楚。为了通过应用固态NMR进行结构研究,这是在膜系统中进行结构分析的最有前途的方法之一,制备生物活性的氟化Baf类似物是必不可少的。在这项研究中,精心设计了两个Baf类似物,并通过三个片段的收敛偶联有效地合成了它们。生物学评估表明,24-F-Baf的活性与Baf相当,表明其可用作固态NMR分析的潜在探针。相比之下,去甲基化的24-F-Baf活性明显降低。两个甲基的不存在导致与靶蛋白结合所必需的大环核心结构的关键构象变化。