Chemoselective ratiometric imaging of protein S-sulfenylation.
Chemoselective ratiometric imaging of protein S-sulfenylation.
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DOI:
10.1039/c7cc02285a
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发表时间:
2017-06-29
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影响因子:
--
通讯作者:
Martin BR
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文献类型:
--
作者:
Tom CTMB;Crellin JE;Motiwala HF;Stone MB;Davda D;Walker W;Kuo YH;Hernandez JL;Labby KJ;Gomez-Rodriguez L;Jenkins PM;Veatch SL;Martin BR
Here we report a ratiometric fluorescent probe for chemoselective conjugation to sulfenic acids in living cells. Our approach couples an α-fluoro-substituted dimedone to an aminonaphthalene fluorophore (F-DiNap), which upon sulfenic acid conjugation is locked as the 1,3-diketone, changing the fluorophore excitation. F-DiNap reacts with S-sulfenylated proteins at equivalent rates to current probes, but the α-fluorine substitution blocks side-reactions with biological aldehydes.
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