Laser-Initiated Radical Trifluoromethylation of Peptides and Proteins: Application to Mass-Spectrometry-Based Protein Footprinting.
Laser-Initiated Radical Trifluoromethylation of Peptides and Proteins: Application to Mass-Spectrometry-Based Protein Footprinting.
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DOI:
10.1002/anie.201706697
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发表时间:
2017-11-06
期刊:
影响因子:
--
通讯作者:
Gross ML
中科院分区:
文献类型:
--
作者:
Cheng M;Zhang B;Cui W;Gross ML
We describe a novel, laser-initiated radical trifluoromethylation for protein footprinting and establish its broad residue coverage. •CF3 reacts with 18 of 20 common amino acids including Gly, Ala, Ser, Thr, Asp, Glu that are relatively “silent” with •OH. This new approach to footprinting is a bridge between trifluoromethylation in materials and medicinal chemistry and structural biology and biotechnology. Its application to a membrane protein and to myoglobin show that the approach is sensitive to protein conformational change and solvent accessibility. We report a novel, laser-initiated trifluoromethylation method for protein footprinting. The trifluoromethyl radical reacts with 18 of 20 common amino acids. This highly reactive radical can probe the conformational changes and the solvent accessibility of proteins, thus serving as a “footprinter” with high hydrophobicity. These results bode well for novel applications of trifluoromethylation as a structural-biology tool.
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