title: Ap4A and Ap5A prefer folded unstacked conformations at pH 4-5, in sharp contrast with Ap2A and Ap3A.
mesh_terms: D000227:Adenine Nucleotides; D000249:Adenosine Monophosphate; D015226:Dinucleoside Phosphates; D006863:Hydrogen-Ion Concentration; D009682:Magnetic Resonance Spectroscopy; D008958:Models, Molecular; D009690:Nucleic Acid Conformation
chemical_list: D000227:Adenine Nucleotides; D015226:Dinucleoside Phosphates; D000249:Adenosine Monophosphate; C012275:P(1),P(5)-di(adenosine-5'-)pentaphosphate; C020733:diadenosine tetraphosphate; C011440:diadenosine triphosphate