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On photoabsorption of the neutral form of the green fluorescent protein chromophore

  1. Author:
    Topol, I.
    Collins, J.
    Polyakov, I.
    Grigorenko, B.
    Nemukhin, A.

  2. Author Address

    Advanced Biomedical Computing Center, Information Systems Program, SAIC-Frederick Inc., NCI-Frederick, Frederick, MD 21702-1201, USA. topol@ncifcrf.gov
    1. Year: 2009
    2. Date: Nov
    3. Epub Date: 9/2/2009
  2. Journal: Biophysical Chemistry
    1. 145
    2. 1
    3. Pages: 1-6
  4. Type of Article: Article
  5. ISSN: 1873-4200 (Electronic);0301-4622 (Linking)
  1. Abstract:

    We present results of theoretical studies of the photoabsorption band corresponding to the vertical electronic transition S(0)-S(1) between first two singlet states of the model chromophore from the green fluorescent protein (GFP) in its neutral form. Predictions of quantum chemical approaches including ab initio and semi-empirical approximations are compared for the model systems which mimic the GFP chromophore in different environments. We provide evidences that the protein matrix in GFP accounts for a fairly large shift of about 40 nm in the S(0)-S(1) absorption band as compared to the gas phase.

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External Sources

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  2. DOI: 10.1016/j.bpc.2009.08.002
  3. PMID: 19720446

Library Notes

  1. Fiscal Year: FY2009-2010
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