Structural basis for no retinal binding in flotillin-associated rhodopsins. - Kovalev, Kirill; Stetsenko, Artem; Trunk, Florian; Marin, Egor; Haro-Moreno, Jose M.; Lamm, Gerrit H.U.; Alekseev, Alexey; Rodriguez-Valera, Francisco; Schneider, Thomas R.; Wachtveitl, Josef; Guskov, Albert (Structure, 2025)