On the normal modes of vibration in the uracil residue - The use of 15N-isotope effects.
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概要
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β-Uridine-5′-phosphoric acid-<SUP>15</SUP>N<SUB>2</SUB> has been prepared from <SUP>15</SUP>N-RNA of baker's yeast which was grown in (<SUP>15</SUP>NH<SUB>4</SUB>)<SUB>2</SUB>SO<SUB>4</SUB> as the sole nitrogen source. Its Raman spectrum has been observed both in <SUP>1</SUP>H<SUB>2</SUB>O and <SUP>2</SUP>H<SUB>2</SUB>O solutions. On the basis of the observed <SUP>15</SUP>N isotope effects on the Raman spectra and on the basis of other data previously obtained, normal modes of vibration have been discussed for six Raman bands of the uracil residue that are considered to be in resonance with its electronic transition at 260 nm. The result has led to a conclusion that C<SUP>5</SUP>=C<SUP>6</SUP> is longer and C<SUP>4</SUP>–C<SUP>5</SUP> is shorter in the excited electronic state à (260 nm) than those in the ground electronic state \~{X}.
- 公益社団法人 日本化学会の論文
著者
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Nishimura Yoshifumi
Faculty of Parmaceutical Sciences, The University of Tokyo
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Haruyama Hideyuki
Faculty of Pharmaceutical Sciences, The University of Tokyo
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Tsuboi Masamichi
Faculty of Parmaceutical Sciences, The University of Tokyo
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Hirakawa Akiko
Faculty of Pharmaceutical Sciences, The University of Tokyo
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Nomura Kimiko
Faculty of Pharmaceutical Sciences, The University of Tokyo
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