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Chemical induction of the interaction between AIMP2-DX2 and Siah1 to enhance ubiquitination
Cell Chemical Biology ( IF 6.6 ) Pub Date : 2024-09-10 , DOI: 10.1016/j.chembiol.2024.08.004
Dae Gyu Kim 1 , Minkyoung Kim 2 , Ja-Il Goo 3 , Jiwon Kong 4 , Dipesh S Harmalkar 5 , Qili Lu 2 , Aneesh Sivaraman 5 , Hossam Nada 2 , Sreenivasulu Godesi 2 , Hwayoung Lee 2 , Mo Eun Song 2 , Eunjoo Song 6 , Kang-Hyun Han 7 , Woojin Kim 7 , Pilhan Kim 8 , Won Jun Choi 2 , Chang Hoon Lee 2 , Sunkyung Lee 9 , Yongseok Choi 3 , Sunghoon Kim 4 , Kyeong Lee 2
Affiliation  

AIMP2-DX2 (hereafter DX2) is an oncogenic variant of aminoacyl-tRNA synthetase-interacting multifunctional protein 2 (AIMP2) that mediates tumorigenic interactions with various factors involved in cancer. Reducing the levels of DX2 can effectively inhibit tumorigenesis. We previously reported that DX2 can be degraded through Siah1-mediated ubiquitination. In this study, we identified a compound, SDL01, which enhanced the interaction between DX2 and Siah1, thereby facilitating the ubiquitin-dependent degradation of DX2. SDL01 was found to bind to the pocket surrounding the N-terminal flexible region and GST domain of DX2, causing a conformational change that stabilized its interaction with Siah1. Our findings demonstrate that protein-protein interactions (PPIs) can be modulated through chemically induced conformational changes.

中文翻译:


AIMP2-DX2 和 Siah1 之间相互作用的化学诱导以增强泛素化



AIMP2-DX2 (以下简称 DX2) 是氨酰基-tRNA 合成酶相互作用多功能蛋白 2 (AIMP2) 的致癌变体,可介导与癌症相关各种因素的致瘤相互作用。降低 DX2 水平可有效抑制肿瘤发生。我们之前报道过 DX2 可以通过 Siah1 介导的泛素化降解。在这项研究中,我们鉴定了一种化合物 SDL01,它增强了 DX2 和 Siah1 之间的相互作用,从而促进了 DX2 的泛素依赖性降解。发现 SDL01 与 DX2 的 N 末端柔性区和 GST 结构域周围的口袋结合,导致构象变化,从而稳定其与 Siah1 的相互作用。我们的研究结果表明,蛋白质-蛋白质相互作用 (PPI) 可以通过化学诱导的构象变化进行调节。
更新日期:2024-09-10
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