Translational initiation factor eIF5 replaces eIF1 on the 40S ribosomal subunit to promote start-codon recognition. - Llácer JL; Hussain T; Saini AK; Nanda JS; Kaur S; Gordiyenko Y; Kumar R; Hinnebusch AG; Lorsch JR; Ramakrishnan V (ELife, 2018)