Simultaneous Synthesis and Biotinylation of Proteins Using Puromycin-Based Labeling Technology for Fabrication of Protein Array Chip
2013
Protein arrays represent a class of devices that are of growing importance in the field of proteomics. These arrays enable screening of a large amount of proteins in a short time and at a lower cost. Here we present a method to fabricate protein array using biotin-conjugated puromycin to simultaneously synthesize and label proteins followed by immobilization onto streptavidin-functionalized surface based on the noncovalent biotin-streptavidin interaction. This method demonstrates the fabrication of protein array based on cell-free transcription/translation system using unmodified DNA as a starting genetic material. As a consequence, the procedure of protein arraying has been greatly simplified over the conventional approaches that require tedious and multi-step reactions. Further, an integrated approach of micro reactor array technology makes this method very simple and robust for achieving high-density protein arrays.
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