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Schneider, Siegfried; Baumann, F.; Geiselhart, P.; Kayser, H. and Scheer, Hugo (1988): BILIPROTEINS FROM THE BUTTERFLY Pieris brassicae STUDIED BY TIME-RESOLVED FLUORESCENCE AND COHERENT ANTI-STOKES RAMAN SPECTROSCOPY. In: Photochemistry and Photobiology, Vol. 48, No. 2: pp. 239-242 [PDF, 343kB]


The fluorescence decay time of the biliverdin IX7 chromophore present in biliproteins isolated from Pieris brassicae is determined to be 44 ± 3 ps. This value suggests a cyclic helical chromophore structure. The vibrational frequencies determined by CARS-spectroscopy are compared with those of model compounds. The data confirm that the chromophore in the protein-bound state adopts a cyclic-helical, flexible conformation.

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