Genetically encoded tetrazine amino acid directs rapid site-specific in vivo bioorthogonal ligation with trans-cyclooctenes.

Genetically encoded tetrazine amino acid directs rapid site-specific in vivo bioorthogonal ligation with trans-cyclooctenes.
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DOI:
10.1021/ja2109745
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发表时间:
2012-02-15
影响因子:
15
通讯作者:
Mehl, Ryan A.
Mehl, Ryan A.
中科院分区:
化学1区
文献类型:
--
作者:
Seitchik, Jason L.;Peeler, Jennifer C.;Taylor, Michael T.;Blackman, Melissa L.;Rhoads, Timothy W.;Cooley, Richard B.;Refakis, Christian;Fox, Joseph M.;Mehl, Ryan A.

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Bioorthogonal ligation methods with improved reaction rates and less obtrusive components are needed for site-specifically labeling proteins without catalysts. Currently no general method exists for in vivo site-specific labeling of proteins that combines fast reaction rate with stable, nontoxic and chemoselective reagents. To overcome these limitations we have developed a tetrazine-containing amino acid, 1, that is stable inside living cells. We have site-specifically genetically encoded this unique amino acid in response to an amber codon allowing a single 1 to be placed at any location in a protein. We have demonstrated that protein containing 1 can be ligated to a conformationally strained trans-cyclooctene, 2, in vitro and in vivo with reaction rates significantly faster than most commonly used labeling methods.
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