Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12779/3540
Title: Noncovalent interactions and paramagnetic relaxation probes. Investigation of the correlation times
Authors: Gaggelli, Elena 
Rossi, Claudio 
Tiezzi, E.
Issue Date: 1980
Project: None 
Journal: THE JOURNAL OF PHYSICAL CHEMISTRY
Abstract: 
An EPR and NMR combined analysis has been carried out in the study of noncovalent interactions involving metal ions. Manganous ion was chosen as the paramagnetic relaxation probe. The 5’-ATP-Mn(II)-(apo-BCA) and the 5’-ATP-Mn(II)-Trp ternary systems have been investigated under different experimental conditions. The EPR line shape was analyzed in terms of a relaxation model based on a distribution of ZFS sites. Typical inverted spectra have been found whenever stacking interaction occurred. Paramagnetic contributions of Tt;l and T2;’ to 13C and IH relaxation rates were investigated by taking into account a distribution of correlation times and the competition between T, and 7, connected with the formation of ternary species.
Description: 
21973
URI: http://hdl.handle.net/20.500.12779/3540
ISSN: 0022-3654
DOI: 10.1021/j100438a026
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