A Fluorogenic Probe for the Copper(I)-Catalyzed Azide−Alkyne Ligation Reaction: Modulation of the Fluorescence Emission via 3(n,π*)−(π,π*) Inversion
摘要:
Chemoselective ligation reactions represent a powerful approach for labeling of proteins or small molecules in a biological environment. We report here a fluorogenic probe that is activated by click chemistry, a highly versatile bio-orthogonal and chemoselective ligation reaction which is based on the azide moiety as the functional group. The electron-donating properties of the triazole ring that is formed in the course of the coupling reaction was effectively utilized to modulate the fluorescence output of an electronically coupled coumarin fluorophore. Under physiological conditions the probe is essentially nonfluorescent and undergoes a bright emission enhancement upon ligation with an azide. Time-resolved emission spectroscopy and semiempirical quantum-mechanical calculations suggest that the fluorescence switching is due to an inversion of the energy ordering of the emissive 1(pi,pi*) and nonemissive 3(n,pi*) excited states. The rapid kinetics of the ligation reaction render the probe attractive for a wide range of applications in biology, analytical chemistry, or material science.
[EN] COMPOUNDS AND METHODS FOR CONJUGATION OF BIOMOLECULES<br/>[FR] COMPOSÉS ET PROCÉDÉS DE CONJUGAISON DE BIOMOLÉCULES
申请人:LIFE TECHNOLOGIES CORP
公开号:WO2012121973A1
公开(公告)日:2012-09-13
Low-copper click chemistry, 1.3-dipolar cycloadditions, and Staudinger ligations for modifying biomolecules is provided. Compositions, methods, and kits relating to low-copper click chemistry, 1.3-dipolar cycloadditions, and Staudinger ligations are also provided.
Provided are azido-BODIPY compounds of formula (I), cyclooctyne-based fluorogenic probes of formula (IV), and activity-based probes of formula (VI). These compounds undergo azide alkyne cycloadditions (AAC) with to form triazolyl products. The provided compounds are useful for detection and imaging of alkyne-, or azide-containing molecules. Methods for detection and imaging biomolecules using compounds of the present disclosure are disclosed.
Compounds and Methods for Conjugation of Biomolecules
申请人:Gee Kyle
公开号:US20150072396A1
公开(公告)日:2015-03-12
Low-copper click chemistry, 1.3-dipolar cycloadditions, and Staudinger ligations for modifying biomolecules is provided. Compositions, methods, and kits relating to low-copper click chemistry, 1.3-dipolar cycloadditions, and Staudinger ligations are also provided.
Compounds and methods for conjugation of biomolecules
申请人:LIFE TECHNOLOGIES CORPORATION
公开号:US10648985B2
公开(公告)日:2020-05-12
Low-copper click chemistry, 1.3-dipolar cycloadditions, and Staudinger ligations for modifying biomolecules is provided. Compositions, methods, and kits relating to low-copper click chemistry, 1.3-dipolar cycloadditions, and Staudinger ligations are also provided.