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One Fusion Protein, Many Labels
Promega and Covalys create multifunctional tagging systems
The Scientist 2005, 19(9):37
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Have you ever needed a red fluorescent version of a protein, but only green was available? Promega http://www.promega.com of Madison, Wis., and Swiss company Covalys Biosciences http://www.covalys.com, have developed methods to tag proteins with a wide range of fluorescent dyes (and other ligands) by first fusing a protein of interest to a generic, nonfluorescent protein "handle." The handle binds covalently to an adapter on the ligand, linking the protein to the tag.
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