Lorenzo Cupellini
(Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Italy)

Light-induced processes occurring in proteins are crucial for many biological functions, such as photosynthesis or biorhythm regulation. These processes are made possible by chromophores embedded in the protein, whose light absorption ultimately initiates the protein response. A multiscale strategy is necessary to achieve a detailed simulation of photoinduced processes in these systems. Such a strategy should account for all interactions between the chromophore, protein, and solvent, treating different time scales. The workhorse of this strategy are QM/MM models, whose polarizable variants are key to accurately describing excited states ^[1,2]. Here I will show examples of simulating photophysics and spectra in photoresponsive proteins  ^[3,4].

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