A Minimal, Unstrained S‐Allyl Handle for Pre‐Targeting Diels–Alder Bioorthogonal Labeling in Live Cells
作者:Bruno L. Oliveira、Zijian Guo、Omar Boutureira、Ana Guerreiro、Gonzalo Jiménez‐Osés、Gonçalo J. L. Bernardes
DOI:10.1002/anie.201608438
日期:2016.11.14
The unstrained S-allyl cysteine amino acid was site-specifically installed on apoptosis protein biomarkers and was further used as a chemical handle and ligation partner for 1,2,4,5-tetrazines by means of an inverse-electron-demand Diels-Alder reaction. We demonstrate the utility of this minimal handle for the efficient labeling of apoptotic cells using a fluorogenic tetrazine dye in a pre-targeting
未拉伸的 S-烯丙基半胱氨酸氨基酸被定点安装在凋亡蛋白生物标志物上,并通过逆电子需求 Diels-Alder 进一步用作 1,2,4,5-四嗪的化学手柄和连接伴侣反应。我们证明了这种最小手柄在预靶向方法中使用荧光四嗪染料有效标记凋亡细胞的效用。S-烯丙基手柄尺寸小、易于化学安装以及对四嗪的选择性反应性,应该很容易扩展到其他蛋白质和生物分子,这可以促进它们在活细胞内的标记。