The membrane protein bacteriorhodopsin is a proton pump, in which proton transport is initiated by the light-induced isomerization of the chromophore retinal. The molecular quantum states involved in this ultrafast reaction have now been characterized by measuring their electric dipole moment.
Quantum state mixing in photobiology: New insight from ultrafast terahertz Stark spectroscopy retrieved 25 June 2024 from https://phys.org/news/2024-06-quantum-state-photobiology-insight-ultrafast.html
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