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

被引：22

作者：

Topol, Igor ^{[1
]}

Collins, Jack ^{[1
]}

Polyakov, Igor ^{[2
]}

Grigorenko, Bella ^{[2
]}

Nemukhin, Alexander ^{[2
,3
]}

机构：

[1] SAIC Fredenick Inc, Adv Biomed Comp Ctr, Informat Syst Program, NCI Frederick, Frederick, MD 21702 USA

[2] Moscow MV Lomonosov State Univ, Dept Chem, Moscow 119991, Russia

[3] Russian Acad Sci, NM Emanuel Inst Biochem Phys, Moscow 119334, Russia

来源：

BIOPHYSICAL CHEMISTRY | 2009年 / 145卷 / 01期

基金：

美国国家卫生研究院;

关键词：

Green fluorescent protein; Photoabsorption spectra; Quantum calculations; Protein matrix influence; ELECTRONIC EXCITATIONS; GAS-PHASE; ABSORPTION-SPECTRUM; PROTONATION STATES; GFP; ISOMERIZATION; CONSISTENT; VARIANTS; DYNAMICS; COLOR;

D O I：

10.1016/j.bpc.2009.08.002

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

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. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：1 / 6

页数：6

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