Download Mendeley4'-SCF 3 -Labeling Constitutes a Sensitive 19 F NMR Probe for Characterization of Interactions in the Minor Groove of DNA.
Li, Q., Trajkovski, M., Fan, C., Chen, J., Zhou, Y., Lu, K., Li, H., Su, X., Xi, Z., Plavec, J., Zhou, C.(2022) Angew Chem Int Ed Engl 61: e202201848-e202201848
- PubMed: 36163470
- DOI: https://doi.org/10.1002/anie.202201848
- Primary Citation of Related Structures:
7QA9, 7W0V - PubMed Abstract:
Fluorinated nucleotides are invaluable for 19 F NMR studies of nucleic acid structure and function. Here, we synthesized 4'-SCF 3 -thymidine (T
' - SCF 3 ${{^{4{^\prime}\hbox{-}{\rm SCF}{_{3}}}}}$ ) and incorporated it into DNA by means of solid-phase DNA synthesis. NMR studies showed that the 4'-SCF 3 group exhibited a flexible orientation in the minor groove of DNA duplexes and was well accommodated by various higher order DNA structures. The three magnetically equivalent fluorine atoms in 4'-SCF 3 -DNA constitute an isolated spin system, offering high 19 F NMR sensitivity and excellent resolution of the positioning of T' - SCF 3 ${{^{4{^\prime}\hbox{-}{\rm SCF}{_{3}}}}}$ within various secondary and tertiary DNA structures. The high structural adaptability and high sensitivity of T' - SCF 3 ${{^{4{^\prime}\hbox{-}{\rm SCF}{_{3}}}}}$ make it a valuable 19 F NMR probe for quantitatively distinguishing diverse DNA structures with single-nucleotide resolution and for monitoring the dynamics of interactions in the minor groove of double-stranded DNA.
Organizational Affiliation:
State Key Laboratory of Elemento-Organic Chemistry and Department of Chemical Biology, College of Chemistry, Nankai University, Tianjin, 300071, China.
