Synthesis and structural insights into the binding mode of the albomycin δ1 core and its analogues in complex with their target aminoacyl-tRNA synthetase
作者:Bharat Gadakh、Gaston Vondenhoff、Luping Pang、Manesh Nautiyal、Steff De Graef、Sergei V. Strelkov、Stephen D. Weeks、Arthur Van Aerschot
DOI:10.1016/j.bmc.2020.115645
日期:2020.9
synthesized the active moiety of albomycin δ1 and investigated its binding mode to its molecular target seryl-trna synthetase (SerRS). In addition, isoleucyl and aspartyl congeners were prepared to investigate whether the albomycin scaffold can be extrapolated to target other aminoacyl-tRNA synthetases (aaRSs) from both class I and class II aaRSs, respectively. The synthesized analogues were evaluated for their
尽管已经证明了有效的疗效和良好的耐受性,但由于缺乏材料,临床上并未使用阿霉素。已经进行了几种尝试通过化学或生化方法来增加阿霉素的产量。在当前的研究中,我们已经合成了阿波霉素δ1的活性部分,并研究了其与分子靶标丝氨酰-trna合成酶(SerRS)的结合方式。此外,准备了异亮氨酰和天冬氨酰同源物以研究是否可以将阿波霉素支架外推以分别靶向I类和II类aaRS的其他氨酰基-tRNA合成酶(aaRS)。通过体外评估合成的类似物抑制相应aaRS的能力使用纯化的酶进行氨酰化实验。据观察,具有5'非对映体小号,6' - [R构型如在晶体结构中观察到的(核苷编号),表现出相对于其同伴5的活性差优异的抑制活性' - [R,6'小号-diasteromer获得在合成过程中作为副产物。此外,与I类aaRS相比,阿波霉素核心支架似乎对II类aaRS抑制具有良好的耐受性。为了理解这种偏见,我们研究了与阿尔布霉素δ1核