PLoS ONE volume 9, issue 6, Pe98403 2014 DOI: 10.1371/journal.pone.0098403 View full text
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Sung In Lim, Yukina Mizuta, Akinori Takasu, Yong Hwan Kim, Inchan Kwon

Abstract: Cu(I)-catalyzed azide-alkyne cycloaddition (CuAAC) is an efficient reaction linking an azido and an alkynyl group in the presence of copper catalyst. Incorporation of a non-natural amino acid (NAA) containing either an azido or an alkynyl group into a protein allows site-specific bioconjugation in mild conditions via CuAAC. Despite its great potential, bioconjugation of an enzyme has been hampered by several issues including low yield, poor solubility of a ligand, and protein structural/functional perturbation…

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