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    J Am Chem Soc. 2008 Oct 15;130(41):13518-9. Epub 2008 Sep 18.

    Tetrazine ligation: fast bioconjugation based on inverse-electron-demand Diels-Alder reactivity.

    Blackman ML, Royzen M, Fox JM.

    Source

    Brown Laboratories, Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, USA.

    Abstract

    Described is a bioorthogonal reaction that proceeds with unusually fast reaction rates without need for catalysis: the cycloaddition of s-tetrazine and trans-cyclooctene derivatives. The reactions tolerate a broad range of functionality and proceed in high yield in organic solvents, water, cell media, or cell lysate. The rate of the ligation between trans-cyclooctene and 3,6-di-(2-pyridyl)-s-tetrazine is very rapid (k2 2000 M-1 s-1). This fast reactivity enables protein modification at low concentration.

    PMID:
    18798613
    [PubMed - indexed for MEDLINE]
    PMCID:
    PMC2653060
    Free PMC Article

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