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Spectroscopic data for eqFP578 and Katushka. pH dependence of the fluorescence for eqFP578 and Katushka (a). Excitation (in green) and emission (in red) spectra of eqFP578 (λex = 552 nm and λem = 578 nm) (b) and Katushka (λex = 558 nm and λem = 635 nm) (c) at pH 7.5. Absorbance at physiological and lower pH of eqFP578 (d), and Katushka (e).
