Excited-state structure determination of the green fluorescent protein chromophore |
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| Authors: | Usman Anwar Mohammed Omar F Nibbering Erik T J Dong Jian Solntsev Kyril M Tolbert Laren M |
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| Affiliation: | Max Born Institut für Nichtlineare Optik und Kurzzeitspektroskopie, Max Born Strasse 2A, D-12489 Berlin, Germany. |
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| Abstract: | Ultrafast polarization-sensitive infrared (IR) spectroscopy of the C=O stretching mode of the chromophore of the green fluorescent protein reveals a near complete twisting around the ethylenic bridge between the phenolate and imidazolidinone groups upon electronic excitation, hinting at a decisive role of this motion in the efficient internal conversion process. |
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