title: Contributions of the PO ester and CO torsion angles of the phosphate group to 31P-nuclear magnetic shielding constant in nucleic acids: theoretical and experimental study of model compounds.
mesh_terms: D004247:DNA; D015226:Dinucleoside Phosphates; D009682:Magnetic Resonance Spectroscopy / Q000379:methods; D009690:Nucleic Acid Conformation; D009841:Oligonucleotides; D012313:RNA; D013329:Structure-Activity Relationship
chemical_list: D015226:Dinucleoside Phosphates; D009841:Oligonucleotides; D012313:RNA; D004247:DNA