Effect of sequential C-terminal tryptophans on green fluorescent protein fluorescence

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Abstract

The effect of the addition of sequential C-terminal tryptophan residues on the fluorescence intensity of GFP was investigated. Tandem repeats of six tryptophan residues markedly decreased fluorescence intensity. This phenomenon is likely to occur because of the inhibition of GFP folding, resulting in insolubility. Exploiting this phenomenon, we constructed a cloning vector that facilitates the identification of recombinant colonies of Escherichia coli by the activation of GFP.

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Tsuchida, S., Kanashiki, T., Izumiya, S., Ichikawa, T., Kurosawa, R., Hamaue, N., & Aoki, T. (2018). Effect of sequential C-terminal tryptophans on green fluorescent protein fluorescence. FEBS Open Bio, 8(7), 1176–1183. https://doi.org/10.1002/2211-5463.12445

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