Title |
FRET-based analysis of protein-nucleic acid interactions by genetically incorporating a fluorescent amino acid
|
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Published in |
Amino Acids, December 2014
|
DOI | 10.1007/s00726-014-1900-2 |
Pubmed ID | |
Authors |
Hyojin Park, Heejin Kang, Wooseok Ko, Wonkoo Lee, Kyubong Jo, Hyun Soo Lee |
Abstract |
Protein-nucleic acid interaction is an important process in many biological phenomena. In this study, a fluorescence resonance energy transfer (FRET)-based protein-DNA binding assay has been developed, in which a fluorescent amino acid is genetically incorporated into a DNA-binding protein. A coumarin-containing amino acid was incorporated into a DNA-binding protein, and the mutant protein specifically produced a FRET signal upon binding to its cognate DNA labeled with a fluorophore. The protein-DNA binding affinity was then measured under equilibrium conditions. This method is advantageous for studying protein-nucleic acid interactions, because it is performed under equilibrium conditions, technically easy, and applicable to any nucleic acid-binding protein. |
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