1. Conformational stability in dinucleoside phosphate crystals. Semiempirical potential energy calculations for uridylyl-3'-5'-adenosine monophosphate (UpA) and guanylyl-3',5'-cytidine monophosphate (GpC) Broyde, Suse B.; Stellman, Steven D.; Hingerty, B.; Langridge, R. 1974 Articles BiochemistryBiophysicsGenetics