Volume 48, Issue 52 pp. 9879-9883
Communication

Analysis and Optimization of Copper-Catalyzed Azide–Alkyne Cycloaddition for Bioconjugation

Vu Hong

Vu Hong

Department of Chemistry and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037 (USA), Fax: (+1) 858-784-8850

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Stanislav I. Presolski

Stanislav I. Presolski

Department of Chemistry and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037 (USA), Fax: (+1) 858-784-8850

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Celia Ma

Celia Ma

Department of Chemistry and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037 (USA), Fax: (+1) 858-784-8850

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M. G. Finn Prof.

M. G. Finn Prof.

Department of Chemistry and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037 (USA), Fax: (+1) 858-784-8850

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First published: 15 December 2009
Citations: 894

This work was supported by The Skaggs Institue for Chemical Biology, Pfizer, Inc., and the NIH (RR021886). We are grateful to Matthias Park for assistance with the synthesis of 3.

Graphical Abstract

How to click with biomolecules: Copper-catalyzed azide–alkyne cycloaddition has been optimized for use with biological molecules. The key development is the addition of two reagents that allow ascorbate to be used as reducing agent whilst eliminating problems caused by copper ascorbate side reactions. The result is a robust, rapid, and convenient procedure for the modification of proteins, DNA, RNA, and other biomolecules (see scheme).

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