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231225s2018 xx |||||o 00| ||eng c |
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|a 10.1002/jcc.25351
|2 doi
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|a pubmed25n0946.xml
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|a (DE-627)NLM284029173
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|a (NLM)29756218
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|a DE-627
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|c DE-627
|e rakwb
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|a eng
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|a Del Galdo, Sara
|e verfasserin
|4 aut
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|a Tyrosine absorption spectroscopy
|b Backbone protonation effects on the side chain electronic properties
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|c 2018
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 17.09.2019
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|a Date Revised 17.09.2019
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2018 Wiley Periodicals, Inc.
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|a The UV-vis spectrum of Tyrosine and its response to different backbone protonation states have been studied by applying the Perturbed Matrix Method (PMM) in conjunction with molecular dynamics (MD) simulations. Herein, we theoretically reproduce the UV-vis absorption spectrum of aqueous solution of Tyrosine in its zwitterionic, anionic and cationic forms, as well as of aqua-p-Cresol (i.e., the moiety that constitutes the side chain portion of Tyrosine). To achieve a better accuracy in the MD sampling, the Tyrosine Force Field (FF) parameters were derived de novo via quantum mechanical calculations. The UV-vis absorption spectra are computed considering the occurring electronic transitions in the vertical approximation for each of the chromophore configurations sampled by the classical MD simulations, thus including the effects of the chromophore semiclassical structural fluctuations. Finally, the explicit treatment of the perturbing effect of the embedding environment permits to fully model the inhomogeneous bandwidth of the electronic spectra. Comparison between our theoretical-computational results and experimental data shows that the used model captures the essential features of the spectroscopic process, thus allowing to perform further analysis on the strict relationship between the quantum properties of the chromophore and the different embedding environments. © 2018 Wiley Periodicals, Inc
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Perturbed Matrix Method
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|a Tyrosine
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|a force field refinement
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| 650 |
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|a molecular dynamics
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|a semiclassical computational spectroscopy
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| 650 |
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|a Protons
|2 NLM
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|a Tyrosine
|2 NLM
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| 650 |
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|a 42HK56048U
|2 NLM
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| 700 |
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|a Mancini, Giordano
|e verfasserin
|4 aut
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| 700 |
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|a Daidone, Isabella
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zanetti Polzi, Laura
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Amadei, Andrea
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Barone, Vincenzo
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of computational chemistry
|d 1984
|g 39(2018), 22 vom: 15. Aug., Seite 1747-1756
|w (DE-627)NLM098138448
|x 1096-987X
|7 nnns
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| 773 |
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|g volume:39
|g year:2018
|g number:22
|g day:15
|g month:08
|g pages:1747-1756
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|u http://dx.doi.org/10.1002/jcc.25351
|3 Volltext
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