abstract: 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.
authors.affiliation: Département de Biologie - Centre d'Etudes Nucléaires de Saclay B.P. no. 2-91-GIF-sur, France
authors.forename: M
authors.initials: M
authors.lastname: Ellenberger
authors.forename: L
authors.initials: L
authors.lastname: Brehamet
authors.forename: M
authors.initials: M
authors.lastname: Villemin
authors.forename: F
authors.initials: F
authors.lastname: Toma