Gas-phase absorption properties of a green fluorescent protein-mutant chromophore: The W7 clone

Gas-phase absorption properties of a green fluorescent protein-mutant chromophore: The W7 clone
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绿色荧光蛋白突变发色团的气相吸收特性:W7 克隆

DOI:
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发表时间:
2003
期刊:
影响因子:
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通讯作者:
L. H. Andersen
L. H. Andersen
中科院分区:
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文献类型:
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作者:
S. Boyé;I. Nielsen;S. Nielsen;H. Krogh;A. Lapierre;H. Pedersen;S. Pedersen;U. Pedersen;L. H. Andersen

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在静电重离子储存环和电喷雾离子源中研究了蓝色gfp突变体的气相吸收特性。从中性光碎片的生产中,得到了质子化和去质子化形式的气相吸收谱,并与它们在液相和蛋白质中的同源物进行了比较。在溶液和气相中,阴离子的最大吸收在456nm左右。它与W7蛋白的一个最大吸收相匹配,这表明这是由于发色团的阴离子形式——类似于绿色荧光蛋白的情况。对于W7发色团阳离子,气相吸收带在454 nm和477 nm处表现为双重态特征。阳离子的溶剂化效应比阴离子的溶剂化效应更明显,所观察到的吸收最大值的变化可以用电荷离域来解释。
The gas-phase absorption properties of a blue GFP-mutant chromophore have been investigated in an electrostatic heavy-ion storage ring combined with an electrospray ion source. From the production of neutral photofragments, the gas-phase absorption profiles of both protonated and deprotonated forms have been obtained and compared with their homologues in the liquid phase and in the protein. Maximum absorption for the anion is found around 456 nm in solution and in the gas phase. It matches one absorption maximum in the W7 protein, which suggests that this is due to an anionic form of the chromophore—similar to the case of the GFP. For the W7 chromophore cation, the gas-phase absorption band exhibits a doublet feature in the gas-phase with maxima at 454 and 477 nm. Solvation effects are more pronounced for the cation than for the anion and the observed shifts in the absorption maxima may be explained by charge delocalization.
DOI: 10.1016/s0968-0004(00)89099-4
发表时间: 1995-11-01
影响因子: 13.8
作者:
CUBITT, AB;HEIM, R;TSIEN, RY
通讯作者: TSIEN, RY
DOI: 10.1073/pnas.93.16.8362
发表时间: 1996-08-06
影响因子: 11.1
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Chattoraj, M;King, BA;Boxer, SG
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影响因子: 11.1
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