A Cleavable Amino−Thiol Linker for Reversible Linking of Amines to DNA
作者:Jonas W. Højfeldt、Peter Blakskjær, and、Kurt V. Gothelf
DOI:10.1021/jo0619736
日期:2006.12.1
A cleavable heterobifunctional cross-linker for the reversible conjugation of amines to thiol-modified DNA has been developed and tested. The succinimidyl 2-(vinylsulfonyl)-ethyl carbonate (SVEC) was prepared in three steps and tested for its ability to react with amines and thiols. The linker was efficient for binding leucine to a thiol-modified DNA sequence and for releasing the amino acid at pH 11.8.
Bioorthogonal Metabolic DNA Labelling using Vinyl Thioether-Modified Thymidine and <i>o</i>
-Quinolinone Quinone Methide
and their functions. Here, we report the development of a new DNA metabolic labeling strategy enabled by the catalyst‐free bioorthogonal ligation using vinyl thioether modified thymidine and o‐quinolinone quinonemethide. With the newly designed vinyl thioether‐modified thymidine (VTdT), we added labeling tags on cellular DNA, which could further be linked to fluorochromes in cells. Therefore, we successfully