Two Rapid Catalyst-Free Click Reactions for In Vivo Protein Labeling of Genetically Encoded Strained Alkene/Alkyne Functionalities
作者:Yadagiri Kurra、Keturah A. Odoi、Yan-Jiun Lee、Yanyan Yang、Tongxiang Lu、Steven E. Wheeler、Jessica Torres-Kolbus、Alexander Deiters、Wenshe R. Liu
DOI:10.1021/bc500361d
日期:2014.9.17
Detailed kinetic analyses of inverseelectron-demandDiels–Alder cycloaddition and nitrilimine-alkene/alkyne 1,3-diploar cycloaddition reactions were conducted and the reactions were applied for rapid protein bioconjugation. When reacted with a tetrazine or a diaryl nitrilimine, strained alkene/alkyne entities including norbornene, trans-cyclooctene, and cyclooctyne displayed rapid kinetics. To apply
A Genetically Encoded Norbornene Amino Acid for the Mild and Selective Modification of Proteins in a Copper-Free Click Reaction
作者:Emine Kaya、Milan Vrabel、Christian Deiml、Stefan Prill、Viviana S. Fluxa、Thomas Carell
DOI:10.1002/anie.201109252
日期:2012.4.27
Built in for clicks: A specially evolved pyrrolysyl‐tRNA synthetase from Methanosarcina mazei was used to incorporate a norbornene amino acid into proteins in E. coli. This unit can be site‐selectively modified under mild physiological conditions using a [3+2] cycloaddition reaction with nitrile imines (see scheme).