title: Phosphorus-proton spin-spin coupling and conformation of a dinucleoside phosphate.
abstract: The phosphorus-31 nuclear magnetic resonance spectrum of beta-adenosine-3'-beta-adenosine-5'-phosphoric acid in its aqueous solution (pH = 9.2) was studied. The signal consisted of eight peaks caused by the spin-spin coupling of the phosphorus nucleus with three protons, two on the 5' carbon, and one on the 3' carbon. The coupling constants were 3.4, 6.5, and 8.1 hertz; from these values the dihedral angles of the three P-O-C-H systems were estimated.
authors.forename: M
authors.initials: M
authors.lastname: Tsuboi
authors.forename: S
authors.initials: S
authors.lastname: Takahashi
authors.forename: Y
authors.initials: Y
authors.lastname: Kyogoku
authors.forename: H
authors.initials: H
authors.lastname: Hayatsu
authors.forename: T
authors.initials: T
authors.lastname: Ukita
authors.forename: M
authors.initials: M
authors.lastname: Kainosho