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Published on: September 15, 2016
One-Step Fluorescent Protein Labeling by Tubulin Tyrosine Ligase
Dominik Schumacher1, Heinrich Leonhardt1, Christian P R Hackenberger2,3
1Department of Biology II, Ludwig Maximilians Universität München and Center for Integrated Protein Science Munich, Martinsried, Germany.
Abstract:
Tub-tag labeling, a novel chemoenzymatic protein functionalization method, facilitates one-step fluorescent labeling of functional biomolecules. The enzyme tubulin tyrosine ligase incorporates coumarin-amino acids to the terminal carboxylic acid of proteins containing a short peptidic recognition sequence called Tub-tag. Here we describe the one-step Tub-tag protein modification protocol in detail and explain its utilization to generate fluorescently labeled proteins for advanced applications in imaging and diagnostics.
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