Alternative Electron Transfer Channels Ensure Ultrafast Deactivation of Light-Induced Excited States in Riboflavin Binding Protein Laura Zanetti-Polzi, † Massimiliano Aschi, † Andrea Amadei, ∗,‡ and Isabella Daidone ∗,† Department of Physical and Chemical Sciences, University of L’Aquila, via Vetoio (Coppito 1), 67010, L’Aquila, Italy, and Department of Chemical and Technological Sciences, University of Rome “Tor Vergata”, Via della Ricerca Scientifica, 00185, Rome, Italy E-mail: andrea.amadei@uniroma2.it; isabella.daidone@univaq.it * To whom correspondence should be addressed † University of L’Aquila ‡ University of Rome “Tor Vergata” 1