Rapid and sensitive detection of acrylic acid using a novel fluorescence assay
作者:Zhi Yi Lee、Sarada S. Raghavan、Farid J. Ghadessy、Yin Nah Teo
DOI:10.1039/c4ra12495b
日期:——
A fluorescence detection assay for acrylic acid, an important target for biomass production, was developed. This assay is based on a photoactivated 1,3-dipolar cycloaddition reaction and was demonstrated for bothin vitroandin vivoapplications.
tools to specifically label biomolecules in livingcells. Considerable progress has been made in site‐specific labeling of proteins and glycans in complex biological systems, but equivalent methods for mRNAs are rare. We present a chemo‐enzymatic approach to label the 5’ cap of eukaryotic mRNAs using a bioorthogonal photoclick reaction. Herein, the N7‐methylated guanosine of the 5’ cap is enzymatically
An agent and method for modifying the 5′ cap of RNA, for example for the purposes of isolation and analysis. According to one aspect the invention provides modified enzymes, namely modified trimethylguanosine synthases 2 from
Giardia lamblia
(GlaTGS2), the enzymatic activity of which is changed such that as compared to wild type enzymes the former can use AdoMet analogues better as cofactors.
UV-Induced Tetrazole-Thiol Reaction for Polymer Conjugation and Surface Functionalization
作者:Wenqian Feng、Linxian Li、Chengwu Yang、Alexander Welle、Oliver Trapp、Pavel A. Levkin
DOI:10.1002/anie.201502954
日期:2015.7.20
A UV‐induced 1,3‐dipolar nucleophilic addition of tetrazoles to thiols is described. Under UV irradiation the reaction proceeds rapidly at roomtemperature, with high yields, without a catalyst, and in both polar protic and aprotic solvents, including water. This UV‐induced tetrazole‐thiol reaction was successfully applied for the synthesis of small molecules, protein modification, and rapid and facile
Selective Functionalization of a Genetically Encoded Alkene-Containing Protein via “Photoclick Chemistry” in Bacterial Cells
作者:Wenjiao Song、Yizhong Wang、Jun Qu、Qing Lin
DOI:10.1021/ja803598e
日期:2008.7.1
We report a tetrazole-based, photoclick chemistry that can be employed to selectively functionalize an alkene genetically encoded in a protein inside E. coli cells. The reaction involved the treatment of E. coli cells with cell-permeable tetrazoles followed by a brief photo irradiation at 302 nm (4 min) and an overnight incubation at 4 degrees C. This in vivo alkene functionalization procedure was simple, straightforward, and nontoxic to E. coli cells. Additionally, fluorescent adducts were formed, facilitating the monitoring of the reaction in vivo. This reaction should offer a new tool for the study of alkene-containing proteins in living systems.