Interactions of polyamines in the measurement of free magnesium concentration by mag-fura-2 and ^3^1P-NMR - Gunther, T.; Vormann, J.; Konstanczak, P.; Schafer, A. (Elsevier)
Polyamines, particularly spermine, in physiological concentrations interact with mag-fura-2 and the mag-fura-2/Mg^2^+ complex, resulting in reduced values of free Mg^2^+ concentration. Similarly, polyamines interact with ATP and MgATP. Thus, free Mg^2^+ concentration, as measured by ^3^1P-NMR or mag-fura-2, is underestimated in the presence of polyamines, particularly of spermine.
http://linkinghub.elsevier.com/retrieve/pii/0005-2736(94)90129-5
Keywords: W; V; WW-YZ; U