Noncovalent and Site-Directed Spin Labeling of Nucleic Acids
作者:Sandip A. Shelke、Snorri Th. Sigurdsson
DOI:10.1002/anie.201002637
日期:2010.10.18
Spinlabel parking: The rigid spinlabel ç (magenta), which is an analogue of cytidine, binds site‐specifically to abasic sites in duplex DNAs, through hydrogen bonding to guanine (blue) and π stacking with the flanking base pairs. EPR spectroscopy shows complete binding of ç to the abasic site at low temperatures. This new spin‐labeling strategy gives easy access to spin‐labelednucleicacids for