The Carbonyl Group in β2 of the Carotenoid Tunes the Photocycle Kinetics in Orange Carotenoid Protein

Volha U. Chukhutsina,Christopher D.M. Hutchison,Jasper J. van Thor

Journal of Molecular Biology（2024）

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摘要

•Study of the microsecond to minute OCP light activation kinetics of the two OCP forms.•Study of OCP with and without the carbonyl group in the β2-ring of the carotenoid.•The new OCP intermediate associated with the absorption bleach (OCPB) is reported.•The carbonyl group in the β2-ring of the carotenoid accelerates the OCP photocycle.

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关键词

Orange Carotenoid Protein,photoreceptors,transient absorption spectroscopy,Arrhenius plot

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