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231223s2007 xx ||||| 00| ||eng c |
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|a pubmed24n0575.xml
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|a (NLM)17721879
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|a DE-627
|b ger
|c DE-627
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|a eng
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|a Hasegawa, Jun-Ya
|e verfasserin
|4 aut
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|a Excited states of GFP chromophore and active site studied by the SAC-CI method
|b effect of protein-environment and mutations
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|c 2007
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|a Text
|b txt
|2 rdacontent
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|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
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|b nc
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|a Date Completed 16.05.2008
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|a Date Revised 01.10.2007
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|a published: Print
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|a Citation Status MEDLINE
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|a Copyright (c) 2007 Wiley Periodicals, Inc.
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|a Excited states of fluorescent proteins were studied using symmetry-adapted cluster-configuration interaction (SAC-CI) method. Protein-environmental effect on the excitation and fluorescence energies was investigated. In green fluorescent protein (GFP), the overall protein-environmental effect on the first excitation energy is not significant. However, glutamine (Glu) 94 and arginine (Arg96) have the red-shift contribution as reported in a previous study (Laino et al., Chem Phys 2004, 298, 17). The excited states of GFP active site (GFP-W22-Ser205-Glu222-Ser65) were also calculated. Such large-scale SAC-CI calculations were performed with an improved code containing a new algorithm for the perturbation selection. The SAC-CI results indicate that a charge-transfer state locates at 4.19 eV, which could be related to the channel of the photochemistry as indicated in a previous experimental study. We also studied the excitation and fluorescence energies of blue fluorescent protein, cyan fluorescent protein, and Y66F. The SAC-CI results are very close to the experimental ones. The protonation state of blue fluorescent protein was determined. Conformation of cyan fluorescent protein indicated by the present calculation agrees to the experimentally observed structure
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Mutant Proteins
|2 NLM
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|a Green Fluorescent Proteins
|2 NLM
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|a 147336-22-9
|2 NLM
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|a Fujimoto, Kazuhiro
|e verfasserin
|4 aut
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|a Swerts, Ben
|e verfasserin
|4 aut
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|a Miyahara, Tomoo
|e verfasserin
|4 aut
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|a Nakatsuji, Hiroshi
|e verfasserin
|4 aut
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|i Enthalten in
|t Journal of computational chemistry
|d 1984
|g 28(2007), 15 vom: 30. Nov., Seite 2443-52
|w (DE-627)NLM098138448
|x 1096-987X
|7 nnns
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| 773 |
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|g volume:28
|g year:2007
|g number:15
|g day:30
|g month:11
|g pages:2443-52
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|d 28
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|e 15
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|h 2443-52
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