Time-resolved spectroscopy of dye-labeled photoactive yellow protein suggests a pathway of light-induced structural changes in the N-terminal cap.

Abstract excerpt

The photoreceptor PYP responds to light activation with global conformational changes. These changes are mainly located in the N-terminal cap of the protein, which is approximately 20 A away from the chromophore binding pocket and separated from it by the central beta-sheet. The question of the propagation of the structural change across the central beta-sheet is of general interest for the superfamily of PAS...

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