Interaction of some complementary constituents of nucleic acids in aqueous solution: UV and IR hypochromicities |
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| Institution: | 1. Dpto. Química Física, U.N.E.D.Madrid Spain;2. Inst. Estructura Materia, C.S.I.C.Madrid Spain;3. Dpto. Espectroscopia, U. Complutense. 28040 Madrid Spain;1. The Hebrew University of Jerusalem, Department of Inorganic and Analytical Chemistry, Jerusalem, Givat Ram 91904, Israel;2. University of Coimbra, CQC, Department of Chemistry, 3004-535 Coimbra, Portugal;3. University of Coimbra, CIEPQPF, Department of Chemical Engineering, 3030-790 Coimbra, Portugal;1. Department of Physiology, Faculty of Basic Medical Sciences, College of Medical Sciences, University of Calabar, P.M.B. 1115, Calabar, Cross River State, Nigeria;2. Department of Physiology, School of Medical Sciences, Universiti Sains Malaysia, 16150, Kubang Kerian, Kelantan, Malaysia;1. Graduate School of Environment and Information Sciences, Yokohama National University, 79-7 Tokiwadai, Hodogaya-ku, Yokohama, Kanagawa 240-8501, Japan;2. Department of Soil Science, Patuakhali Science and Technology University, Dumki, Patuakhali 8602, Bangladesh;3. Department of Oceanography, University of Dhaka, Dhaka 1000, Bangladesh;4. Department of Fisheries, University of Dhaka, Dhaka 1000, Bangladesh;1. UNEP Risø Centre, Technical University Denmark, Denmark;2. Indian Institute of Management, Ahmedabad, India;1. Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei 230026, PR China;2. Laser Zentrum Hannover e.V., 30419 Hannover, Germany |
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| Abstract: | Ultraviolet spectra of mixtures of monomeric units of nucleic acids and dinucleoside monophosphates, containing the complementary nucleobases adenine and uracil, have been obtained in aqueous solution. Hypochromicity of spectra of the mixtures with respect to free components has been determined, introducing the correction corresponding to selfassociation of these compounds. Hypochromicity of mixtures can be considered an experimental evidence of the existence of heteroassociation processes.Infrared spectra of some complementary constituents of nucleic acids in aqueous solution also reveal hypochromic effects, which provide information about the molecular groups involved in the heteroassociation. |
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