The structure of nontypeable Haemophilus influenzae SapA in a closed conformation reveals a constricted ligand-binding cavity and a novel RNA binding motif. - Lukacik, Petra; Owen, C. David; Harris, Gemma; Bolla, Jani Reddy; Picaud, Sarah; Alibay, Irfan; Nettleship, Joanne E.; Bird, Louise E.; Owens, Raymond J.; Biggin, Philip C.; Filippakopoulos, Panagis; Robinson, Carol V.; et al. (PLoS ONE, 2021)