title: Nucleoside complexing. Interligand interactions between purine and pyrimidine exocyclic groups and polyamines. The importance of both hydrogen bonds and nonbonding repulsions.
mesh_terms: D001665:Binding Sites; D055598:Chemical Phenomena; D002621:Chemistry; D006859:Hydrogen; D008024:Ligands; D011073:Polyamines; D011684:Purine Nucleosides; D011741:Pyrimidine Nucleosides
chemical_list: D008024:Ligands; D011073:Polyamines; D011684:Purine Nucleosides; D011741:Pyrimidine Nucleosides; D006859:Hydrogen