The ER membrane protein complex interacts cotranslationally to enable biogenesis of multipass membrane proteins. - Shurtleff MJ; Itzhak DN; Hussmann JA; Schirle Oakdale NT; Costa EA; Jonikas M; Weibezahn J; Popova KD; Jan CH; Sinitcyn P; Vembar SS; Hernandez H; et al. (ELife, 2018)