The pH dependence of spin-spin coupling constants J (P-O-P) of ADP and ATP has been determined from the phosphorus NMR spectra at 0 degrees. The variation curves have been interpreted as titration curves. These give different pK values. Comparison with the tripolyphosphate shows the existence of triphosphate chain structural deformation in the nucleotides.
Ellenberger
M
M
Département de Biologie - Centre d'Etudes Nucléaires de Saclay B.P. no. 2-91-GIF-sur, France
Brehamet
L
L
Villemin
M
M
Toma
F
F