Otoferlin acts as a Ca2+ sensor for vesicle fusion and vesicle pool replenishment at auditory hair cell ribbon synapses. - Michalski N; Goutman JD; Auclair SM; Boutet de Monvel J; Tertrais M; Emptoz A; Parrin A; Nouaille S; Guillon M; Sachse M; Ciric D; Bahloul A; et al. (ELife, 2017)