title: Deprotonated carboxylic group of amino acids transforms adenine into its rare prototropic tautomers.
abstract: By UV spectroscopic data for anhydrous DMSO solutions and ab initio HF/6-31G** calculations in vacuum it was shown for the first time that deprotonated amino acid carboxylic group is able to change tautomeric state of a nucleotide base, exactly to convert the N9H ground-state prototropic tautomer of adenine into the N7H and N1H rare ones.
authors.affiliation: Institute of Molecular Biology and Genetics, National Academy of Sciences of Ukraine, Kyiv.
authors.forename: S P
authors.initials: SP
authors.lastname: Samijlenko
authors.forename: T V
authors.initials: TV
authors.lastname: Bogdan
authors.forename: S A
authors.initials: SA
authors.lastname: Trygubenko
authors.forename: A L
authors.initials: AL
authors.lastname: Potyahaylo
authors.forename: D M
authors.initials: DM
authors.lastname: Hovorun
mesh_terms: D000225:Adenine / Q000737:chemistry*; D002264:Carboxylic Acids / Q000737:chemistry*; D007536:Isomerism; D013056:Spectrophotometry, Ultraviolet; D013816:Thermodynamics
chemical_list: D002264:Carboxylic Acids; D000225:Adenine