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A 31P-NMR study of the interaction of Mg2+ ions with nucleoside diphosphates
Abstract:
The interaction of Mg2+ with nucleoside disphosphates : ADP, GDP, CDP and UDP has been studied by phosphorus magnetic resonance spectroscopy in aqueous solution. The results show that these four nucleotides behave similarly, the Mg2+ ion binds to the alpha but not to the beta phosphate moiety. The strength of the interaction of Mg2+ ions with nucleoside diphosphates is weaker than with nucleoside triphosphates. The association of Mg2+ on the phosphate chain is stronger in a neutral than in an acid medium.
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