Conformation of L-Tyrosine Studied by Fluorescence-Detected UV-UV and IR-UV Double-Resonance Spectroscopy
Journal of Physical Chemistry A Volume 111 Issue 17
Page 3209-3215
published_at 2007-05-03
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| File | |
| Title ( eng ) |
Conformation of L-Tyrosine Studied by Fluorescence-Detected UV-UV and IR-UV Double-Resonance Spectroscopy
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| Creator |
Kobayashi Yusuke
Ito Takafumi
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| Source Title |
Journal of Physical Chemistry A
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| Volume | 111 |
| Issue | 17 |
| Start Page | 3209 |
| End Page | 3215 |
| Abstract |
The laser-induced fluorescence spectrum of jet-cooled L-tyrosine exhibits more than 20 vibronic bands in the 35450-35750 cm-1 region. We attribute these bands to eight conformers by using results of UV-UV hole-burning spectroscopy. These isomers are classified into four groups; each group consists of two rotational isomers that have a similar side-chain conformation but different orientations of the phenolic OH. The splitting of band origins of rotational isomers is 31, 21, 5, and 0 cm-1 for these groups. IR-UV spectra suggest that conformers belonging to two of the four groups have an intramolecular OH・・・N hydrogen bond between the COOH and NH2 groups. By comparing experimental and theoretical results of L-tyrosine with those of L-phenylalanine, we propose probable conformers of L-tyrosine.
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| Descriptions |
This is a preprint of an article published by American Chemical Society in Journal of Physical Chemistry A, 2007, available online: http://pubs.acs.org/doi/abs/10.1021/jp070163a.
This study is supported by the Grant-in-Aids for Scientific Research (18205003 and 18685001) by the Ministry of Education, Science, Sports, and Culture, Japan. T.E. thanks the support of Satake foundation.
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| NDC |
Chemistry [ 430 ]
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| Language |
eng
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| Resource Type | journal article |
| Publisher |
American Chemical Society
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| Date of Issued | 2007-05-03 |
| Rights |
Copyright (c) 2007 American Chemical Society
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| Publish Type | Author’s Original |
| Access Rights | open access |
| Source Identifier |
[ISSN] 1089-5639
[DOI] 10.1021/jp070163a
[DOI] http://dx.doi.org/10.1021/jp070163a
isVersionOf
[PMID] 17425294
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